List of Supergirl episodes

Supergirl is an American superhero action-adventure drama television series developed by Ali Adler, Greg Berlanti and Andrew Kreisberg (the latter two having previously created Arrow and The Flash) that originally aired on CBS and premiered on October 26, 2015. It is based on the DC Comics character Supergirl (Kara Zor-El), created by Otto Binder and Al Plastino, and stars Melissa Benoist in the title role. Supergirl is a costumed superheroine who is the biological cousin to Superman and one of the last surviving Kryptonians.

The series was officially picked up on May 6, 2015, after receiving a series commitment in September 2014, and received a full season order on November 30, 2015. On May 12, 2016, Warner Bros. Television announced that the series had been renewed for a second season and that it would move from CBS to The CW. It debuted on October 10, 2016.^[1] As of November 28, 2016, 28 episodes of Supergirl have aired.

Series overview

Season		Episodes		Originally aired
				First aired	Last aired	Network
	1	20		October 26, 2015	April 18, 2016	CBS
	2	22[2]		October 10, 2016	TBA	The CW

Episodes

Season 1 (2015–16)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
1	1	"Pilot"	Glen Winter	Story by : Greg Berlanti & Ali Adler & Andrew Kreisberg Teleplay by : Ali Adler	October 26, 2015	276088	12.96[3]
Before the destruction of the planet Krypton, Kal-El is sent to Earth along with his cousin Kara Zor-El. The planet's implosion forces her ship off course and into the Phantom Zone for 24 years, before landing on Earth. Kal, now operating as the vigilante "Superman" in Metropolis, puts Kara in the care of the Danvers in National City. Twelve years later, Kara, working at the media conglomerate CatCo, reveals her powers as a vigilante. She tells her co-worker, Winn Schott, about her secret and he starts aiding her. Her cold-hearted boss, Cat Grant, titles the vigilante "Supergirl". Alex, Kara's adoptive sister, is revealed to be working at the Department of Extra-Normal Operations (DEO), under the leadership of Hank Henshaw, investigating alien activity. Kara learns that there are hundreds of aliens on Earth, most of whom came from a prison that was run by her mother, Alura. Her actions attract the attention of an alien called Vartox, and she is able to defeat him, who kills himself. James Olsen, another one of Kara's colleagues, reveals that Kal sent him to look after her and presents her with a new cape. Vartox's superior is revealed to be Astra In-Ze, Alura's identical twin sister, who wants to conquer Earth.
2	2	"Stronger Together"	Glen Winter	Story by : Greg Berlanti & Andrew Kreisberg Teleplay by : Andrew Kreisberg & Ali Adler	November 2, 2015	4X7602	8.87[4]
In an effort to put a positive image on Supergirl in the wake of a serious mishap, Kara asks Winn and James to help her perfect her skills, while Hank and Alex put Kara through extensive physical training. Kara learns that an alien of the Hellgrammite species who escaped from Fort Rozz, Alura's prison, is on Earth searching for chlorine-based food. The DEO prepares an ambush for the Hellgrammite, but it escapes, kidnaps Alex, and takes her to Astra, who uses Alex as a trap for Kara. As Kara and Astra fight, Hank injures Astra with a Kryptonite knife and Alex kills the Hellgrammite. Learning that Kara has become more powerful than she had imagined and that humanity has a means of weakening Kryptonians, Astra muses that her "plans" may need to be postponed. Alex provides Kara with an interactive artificial intelligence of Alura's consciousness. Meanwhile, Cat pressures James to get her an interview with Supergirl. In the end, Kara agrees to the interview and prevents James from getting fired. It is also revealed that Hank might have a secret of his own when his eyes glow red.
3	3	"Fight or Flight"	Dermott Downs	Michael Grassi & Rachel Shukert	November 9, 2015	4X7603	8.07[5]
During the interview with Cat, Kara accidentally reveals that she is Superman's cousin. After Cat exposes the relationship, Kara is attacked by Reactron, who seeks to kill her in order to get his revenge on Superman, but she manages to send him fleeing. He later goes to LORD Technology labs and kidnaps Maxwell Lord to get him to fix his suit. Kara later learns that a reactor meltdown Superman stopped in the past killed Reactron's wife. She goes to the hideout of Reactron, identified as Ben Krull, and manages to save Maxwell, only to get badly injured by Krull afterwards, but Superman comes to save her. She gets mad at James for calling Superman for help. During a party Cat organized, Krull breaks in to find Supergirl. While James distracts Reactron, Kara covers her hand in lead so that she can use it to safely remove the power core in Krull's suit and defeat him. Kara, who has feelings for James, witnesses his ex-fiancée, Lucy Lane, also Lois Lane's younger sister, paying him a visit to restart their relationship.
4	4	"How Does She Do It?"	Thor Freudenthal	Yahlin Chang & Ted Sullivan	November 23, 2015[lower-alpha 1]	4X7604	7.19[9]
Cat leaves town, entrusting her son Carter to Kara. A bomber starts targeting Lord's company. On the opening night of Lord's new bullet train, Kara and the DEO find out about two bomb threats simultaneously, one at the airport and one on the train. The DEO goes to the airport, where Hank secretly uses his powers to deactivate the bomb. Kara goes to the train to save Carter, who is on it with the bomber. As she confronts the bomber, he claims that he is doing it for his daughter. He requests her to save the people on the train after he starts the timer, killing himself. At DEO headquarters, Alex finds a fail-safe in the bomb defused by Hank, who claimed it was just a decoy. Kara deduces that Lord was the one behind the bombings. As Supergirl, she confronts Lord, who implies that the threats were used to test her skills. He also vows to find the person important to her on the train. Meanwhile, James initially refuses to date Lucy; but Kara convinces him to return to her.
5	5	"Livewire"	Kevin Tancharoen	Roberto Aguirre-Sacasa & Caitlin Parrish	November 16, 2015[lower-alpha 1]	4X7605	7.77[10]
After fighting an alien escapee, Kara meets Alex at the apartment to greet the latter's mother, Eliza, for Thanksgiving, inviting Winn due to his lack of plans. CatCo's shock jock, Leslie Willis is demoted by Cat to traffic reporting after a controversial bashing of Supergirl. During a severe thunderstorm, Kara tries to save Leslie, but lightning strikes them both, imbuing Leslie with electromagnetic powers. Leslie takes the name "Livewire" and tries to take revenge on Cat, but Kara eventually stops her and she is imprisoned at the DEO. Cat and Kara become closer. Meanwhile, Alex tells Eliza in a fit of rage at the dinner table that she's actually working for the DEO. Eliza reveals to Alex and Kara that her husband, Jeremiah, offered himself up to work for Henshaw in exchange for Kara's safety and then died mysteriously. Alex and Kara decide to investigate Henshaw and find the truth about Jeremiah's death.
6	6	"Red Faced"	Jesse Warn	Michael Grassi & Rachel Shukert	November 30, 2015	4X7606	8.02[11]
Kara hurts a civilian due to her uncontrolled anger. Sam Lane, Lucy' father and also a military general, arrives at the DEO with her as his attache, demanding Supergirl let them test her powers by fighting an android called Red Tornado, which is invented by T.O. Morrow. She overpowers Red Tornado, leading to Sam firing Morrow. Sam is later attacked by Red Tornado; but Kara saves him. The DEO realizes that Red Tornado is actually a drone controlled by Morrow. Alex and Kara engage Morrow and Red Tornado, respectively. Alex kills Morrow, making Red Tornado engage Kara without control. She uses her eyes enhanced by her rage to destroy it. Lucy resigns from military service in order to stay with James. Kara finds out that her powers have diminished when she cuts herself and starts bleeding. Meanwhile, Winn informs Kara and Alex that Jeremiah and Hank went on a mission in South America, where Jeremiah died, deducing that Hank is the last person to have seen him alive.
7	7	"Human for a Day"	Larry Teng	Yahlin Chang & Ted Sullivan	December 7, 2015	4X7607	7.67[12]
As Kara tries to adapt to life without her powers, an earthquake hits National City. Winn informs Kara that she needs a rise of adrenaline in her blood to regain her powers. The team begins saving the CatCo staff upstairs by the elevator shaft, from where James falls after saving everyone. Kara regains her powers and saves him before rushing to help the citizens. Winn becomes jealous of the intimacy between her and James. Afterwards, Kara is attacked by Astra and her operatives. Meanwhile, the earthquake causes a DEO prisoner called Jemm, who has psychic abilities to read and control minds, to escape. Hank locks the facility and takes a team to engage Jemm, with the former being the only survivor. That causes Alex to become more suspicious of Hank. She locks him in a room and engages Jemm alone, being overpowered. Hank arrives in time and kills him. He explains to her that he is the sole survivor of an alien species and his name is J'onn J'onzz. He killed the real Hank after the latter killed Jeremiah, who tried to save J'onn. He then assumed Hank's shape and identity.
8	8	"Hostile Takeover"	Karen Gaviola	Roberto Aguirre-Sacasa & Caitlin Parrish	December 14, 2015	4X7608	7.28[13]
Kara is overpowered by Astra and escapes. In a second duel, the former defeats the latter and brings her to the DEO, where the latter states that all she wanted was to save Krypton, the same thing she wants for Earth. She also reveals that Alura used Kara on Krypton to arrest the former. Kara confronts the interactive artificial intelligence of Alura, who refuses to confirm that Astra's plan could have worked. It is revealed that Astra wanted to get arrested in order to divert attention from her husband, Non, and his team from attacking LORD Technologies. Kara rushes there and engages him. Meanwhile, Cat's emails are hacked and her personal information is leaked to the press. Kara finds out that the chairman of the board was behind the hack and provides Cat with evidence by the help of James, Lucy and Winn, leading to the chairman's arrest. Kara also finds out from the leaks that Cat has a 24-year old son named Adam Foster. Cat reveals to Kara that she has found out about the latter's alter ego.
9	9	"Blood Bonds"	Steve Shill	Ted Sullivan & Derek Simon	January 4, 2016	4X7609	8.75[14]
Non overpowers Kara and leaves with Hank. Lord sends the DEO away from his facility, vowing to defend it himself, and returns to a secret experiment he is conducting. Non offers to trade Hank for Astra, but Sam, who is placed in charge of the DEO by the President, refuses. He tortures Astra for Non's location, and walks into a trap placed by Non. Kara is distraught over both her defeat and the fact that Cat will fire her unless she is convinced that Kara is not Supergirl. Kara goes to the DEO and talks with Astra who tells her that Alura believed her claim that Krypton was doomed, but sentenced her for her illegal methods while promising to work for her cause. Alex and Kara make the trade over Lane's objections and Astra orders Non to withdraw despite his numerical advantage. Sam and his men leave the DEO. Hank uses his shape-shifting power to present Cat with Kara and Supergirl simultaneously, casting doubt on her initial deduction of their identities. Kara, James and Winn decide to find the secret about Lord, who is shown in possession of an alien woman.
10	10	"Childish Things"	Jamie Babbit	Story by : Yahlin Chang Teleplay by : Anna Musky-Goldwyn & James DeWille	January 18, 2016	4X7610	8.77[15]
Winn's father, known as the Toyman, escapes from prison, leaving the former a message to meet him. Winn tells the FBI about it. They find it a trap; but Kara saves them. Winn reveals that his father's boss, Chester Dunholtz, stole his toy designs, leading to the Toyman trying to kill Dunholtz, killing other people instead and going to jail. The Toyman kidnaps Winn, demanding him to attend a ceremony to kill Dunholtz and threatening to kill the other guests by the bombs he has planted. Kara manages to save the guests and have the Toyman arrested. Lucy accepts Cat's job offer and Winn addresses his feelings to Kara. Meanwhile, Alex goes to dinner with Maxwell, giving Hank the chance to infiltrate LORD Technologies by shapeshifting into Maxwell. He finds the woman and takes pictures, but is forced to clear a security guard's memory to escape without arousing suspicion. Maxwell is revealed to be monitoring Alex using a camera and microphone he planted on her purse. He finds out about Supergirl's identity.
11	11	"Strange Visitor from Another Planet"	Glen Winter	Michael Grassi & Caitlin Parrish	January 25, 2016	4X7611	7.90[16]
Miranda Crane, an anti-alien Senator, arrives in National City and is attacked by an alien. Kara saves Crane and brings her to the DEO, where Hank reveals to Alex that the alien is a White Martian, whose species wiped out the Green Martians, Hank's species. Kara finds out that the Crane inside the DEO is actually the White, who is a shapeshifter. The White escapes, abducting Alex. Hank proposes a trade of himself with Alex, which the White accepts. Kara interrupts the exchange, giving Hank the chance to attempt to kill the White; but Kara dissuades him and the White is incarcerated in the DEO. Crane withdraws from her anti-alien initiative. Meanwhile, Kara and Winn become distant to each other. Adam pays a visit to Cat due to receiving a letter, which was actually written by Kara. Adam and Cat find it hard to develop a relationship; but Kara later helps them reconcile. Adam asks Kara on a date, which she accepts. An identical Supergirl appears in National City.
12	12	"Bizarro"	John Showalter	Roberto Aguirre-Sacasa & Rachel Shukert	February 1, 2016	4X7612	6.68[17]
It is revealed that the new Supergirl is the woman Maxwell has been experimenting on and has brainwashed her with the sole purpose of killing the prime Supergirl. Cat titles her "Bizarro", who later witnesses Supergirl saving civilians and realizing that Supergirl is not a bad person, as Maxwell has dictated to her. However, Maxwell convinces her to continue hunting Supergirl. Bizarro attacks Kara when she is out with Adam, making her realize that Maxwell knows her identity. The DEO uses Kryptonite on Bizarro, whose face gets deformed instead and manages to escape. Kara decides to end her relationship with Adam. Maxwell advises Bizarro to use a person Supergirl cares about; so she kidnaps James. Kara arrives and engages her before Alex uses a modified Kryptonite to weaken Bizarro, who is rendered unconscious and kept in the DEO. Alex brings Maxwell to the DEO and locks him up, so he threatens Eliza indirectly. Back at her apartment, Kara is attacked by an unknown creature.
13	13	"For the Girl Who Has Everything"	Dermott Downs	Story by : Andrew Kreisberg Teleplay by : Ted Sullivan & Derek Simon	February 8, 2016	4X7613	7.92[18]
The creature, which is known as the Black Mercy, places Kara in a dreamlike state that has her imagining she is back on Krypton. The Black Mercy is part of a plot by Non, who is using Earth's technology to launch "Myriad", which he and Astra are planning to use to wipe out humanity. Astra secretly informs Alex of the Black Mercy; and the latter enlists the help of Hank, Winn, Maxwell, and James to save Kara, with Alex entering Kara's mind to pull her out and bring her back to reality. When Kara comes back, she seeks revenge on Non and stops him, who escapes with after revealing the word "Myriad". Elsewhere, Astra engages Alex and Hank, who fights as the Martian Manhunter. The former overpowers him before Alex impales her with a Kryptonite sword, killing her. Kara arrives and Hank tells her that he killed Astra instead of Alex, who starts to feel guilty over whether she should tell Kara the truth. Non vows revenge on Kara in the wake of Astra's death.
14	14	"Truth, Justice and the American Way"	Lexi Alexander	Story by : Michael Grassi Teleplay by : Yahlin Chang & Caitlin Parrish	February 22, 2016	4X7614	7.25[19]
Kara and Non pay their final respects to Astra; and he vows to kill her after he finishes mourning. Kara, Alex, and J'onn track down an armored alien known as the Master Jailer, whom they discover was a guard at Fort Rozz. He has become a vigilante who kills the alien fugitives, including those convicted of non-violent crimes such as a professor sentenced for drug smuggling. Kara confronts the Jailer, but he takes her prisoner and plans to execute her for not joining him. The DEO pinpoints their location and Kara is able to save the professor and defeat the Jailer. Alura refuses to reveal anything about Myriad and Kara realizes she cannot forgive J'onn for killing Astra. Meanwhile, Cat assigns James and Lucy to investigate Maxwell's disappearance. Tensions between James and Lucy develop after he reveals his knowledge of the DEO and friendship with Supergirl. The DEO releases Maxwell, threatening to disclose his criminal activity if he reveals Supergirl's identity or the DEO's location. Kara finds competition in Cat's new "first assistant" Siobhan Smythe.
15	15	"Solitude"	Dermott Downs	Story by : Rachel Shukert Teleplay by : Anna Musky-Goldwyn & James DeWille	February 29, 2016	4X7615	6.69[20]
A hacker steals the personal information of several people and gives it to Cat for disclosure, which she refuses. The hacker, turned out to be an alien named Indigo with the ability to use the internet for traveling, announces her decision to destroy National City. Kara leaves the DEO and enlists the help of James and Lucy to stop Indigo while the DEO enlists Winn for it. Lucy realizes that Indigo's intention in the hacking was only one person, a military general with access to the nuclear arsenal. Indigo infiltrates the nuclear base using the general's cell phone and launches a missile towards National City. Kara stops it using the DEO's help. Winn uploads a virus to Indigo, destroying her after she reveals to Kara that it was she who helped Kara's ship exit the Phantom Zone., which in turn facilitated Fort Rozz's expulsion. Kara decides to rejoin the DEO; and Alex reveals the truth about Astra, being forgiven by Kara. Lucy ends her relationship with James, accusing him of loving Kara. Winn and Siobhan develop a relationship. Non recovers Indigo's pieces and revives her.
16	16	"Falling"	Larry Teng	Robert Rovner & Jessica Queller	March 14, 2016	4X7616	6.53[21]
After helping fight a warehouse fire, Supergirl inadvertently comes into contact with Red Kryptonite which destroys her inhibitions. Kara/Supergirl soon becomes more cold, shallow and cynical around all others, which Winn, Jimmy, Alex, and even Cat wonder what is going on with her. Kara even goes as far as to frame the back-stabbing Siobhan by leaking information that Siobhan has been contacting the Daily Planet for information on Supergirl's actions which results in Cat terminating Siobhan's employment. It soon turns out that Maxwell Lord is the one responsible for he created the so-called Red Kryptonite, in the hopes of stopping Non's next attack. After Evil Supergirl makes an attempt on Cat's own life, she goes on TV and denounces Supergirl. Alex and Maxwell are forced to form an uneasy alliance while he tries to help the DEO try to stop Evil Supergirl. After a climatic battle downtown, the DEO is able to subdue and capture Evil Supergirl, but at the price of Hank revealing himself as the Martian Manhunter.
17	17	"Manhunter"	Chris Fisher	Story by : Derek Simon Teleplay by : Cindy Lichtman & Rachel Shukert	March 21, 2016	4X7617	6.00[22]
While Kara is trying to win back National City's trust, the hot-headed Marine Colonel James Harper (guest star Eddie McClintock) begins an investigation into the J'onn affair with Lucy, having re-enlisted into the Army at her previous rank of Major, as his legal assistant. Hank/J'onn J'onzz then tells the backstory about how he first met Jeremiah Danvers (guest star Dean Cain) 10 years earlier while he and Hank were on a mission in South America to find him and how J'onn took his identity to oversee the DEO. After her interrogation, the vindictive Lucy implicates Alex with her knowledge about J'onn's real identity. After learning that Hank and Alex are on their way to Project Cadmus, Kara finally tells Lucy that she is Supergirl and convinces her to help rescue Hank and Alex. Hank learns that Jeremiah is still alive, so he and Alex go on the run to find him, but not before manipulating Harper into resigning from the Marines and appointing Lucy as the acting director of the DEO. Meanwhile, Siobhan tries to get revenge on Kara for getting her fired, but gets caught by Winn and discovers that she has the power to sonic scream.
18	18	"Worlds Finest"	Nick Gomez	Story by : Greg Berlanti Teleplay by : Andrew Kreisberg & Michael Grassi	March 28, 2016	4X7618	7.17[23]
Siobhan discovers that the women in her family are cursed with the spirit of a banshee, which can only be quieted by killing whoever wronged them. Deciding to kill Kara, Siobhan frees Livewire from captivity at the DEO and suggests they team up to kill both Kara and Cat. Siobhan—now calling herself Silver Banshee—and Livewire kidnap Cat and wreak havoc on National City Park. Meanwhile, Supergirl has a run-in with Barry Allen/ Flash, a superhero from an alternate universe, whom she asks for his help to find Livewire and Silver Banshee. After a climatic fight in a downtown park, Kara is able to subdue them and win back National City's trust. At the end, Kara decides to reveal her romantic feelings for James only to discover that everyone in National City has fallen under some kind of spell, revealed by Non to be the result of Myriad.
19	19	"Myriad"	Adam Kane	Yahlin Chang & Caitlin Parrish	April 11, 2016	4X7619	6.12[24]
The Myriad effect has taken over National City and even Superman is under control, leaving Kara, Cat, and Maxwell as the only ones immune. Now, Kara must find a way to stop Non, but Maxwell is looking at destroying the Kryptonians with a Kryptonite bomb even at the risk of killing other humans. Cat objects and prompts Kara to find an alternative. The effect brings fugitives Alex and J'onn back after Alex tells Eliza the truth about Jeremiah and Hank Henshaw. When Indigo senses the two returning, she defeats J'onn, but takes Alex and places her under mind control as Non's payback for Astra's death.
20	20	"Better Angels"	Larry Teng	Story by : Andrew Kreisberg & Ali Adler Teleplay by : Robert Rovner & Jessica Queller	April 18, 2016	4X7620	6.11[25]
Kara fights with Alex, who is controlled by Non. When Alex is about to kill Kara with the same Kryptonian sword used to kill Astra, their mother pleads with her to stop, breaking Non's control over Alex. The team learns that hope is the key to stopping Myriad. Supergirl inspires the citizens of National City, waking them from the Myriad trance. However, Non is convinced by Indigo to kill all the humans on Earth by increasing Myriad's frequency. Back at the DEO, Max warns Kara that she might not survive a solo fight with Non and Indigo; J'onn later insists on helping her. Kara and J'onn confront Non and Indigo at Fort Rozz, which is powering Myriad. Kara defeats Non in a heat vision battle and J'onn rips Indigo's body apart. As Indigo dies, she reveals that she locked the system so Myriad can't be shut down. Kara flies Fort Rozz into space, rendering Myriad harmless; Alex rescues her using Kara's pod. Afterward, J'onn is reinstated as the Director of the DEO and Cat gives Kara a promotion. While Kara celebrates at her house, another pod similar to the one in which Kara came to Earth crashes near National City. Kara opens the pod and is shocked by what is inside it.

Notes

1. Following the November 2015 Paris attacks, the episode "How Does She Do It?", which features content similar to the attacks and was originally scheduled to air as the fourth episode of the season on November 16, 2015, was pulled from its scheduled airing. In its place, the episode "Livewire", which was originally scheduled to air as the fifth episode on November 23, 2015, was aired.^[6] "How Does She Do It?" then aired as the fifth episode on November 23.^[7] For the season's home media release, the episodes were restored to their original production order,^[8] which is how the episodes are presented here.

Season 2 (2016)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
21	1	"The Adventures of Supergirl"	Glen Winter	Story by : Greg Berlanti & Andrew Kreisberg Teleplay by : Andrew Kreisberg & Jessica Queller	October 10, 2016	T13.20151	3.06[26]
Kara finds an unknown young man lying unconscious in the pod and takes him to DEO. She prepares for a date with James just as the commercial spacecraft, the Venture, is launched into space. It suffers engine failure and descends to Earth, but Kara saves the craft with help from Superman. They discover the main target was Lena Luthor, the new CEO of Luthor Corp after her brother, Lex, was convicted of numerous crimes. In a ceremony where she renames the company L-Corp, she is attacked again by John Corben, an assassin. Alex engages him while Kara and Clark stop a building from collapsing. Corben reveals he was working for Lex before he is shot by Lena. Kara chooses to be a reporter for CatCo, a decision supported by Cat. Kara and James decide to keep their relationship friendly. Winn is formally hired to work at the DEO. Meanwhile, J'onn reveals to Alex that he was the one who found the first cluster of Kryptonite and decided to keep it against the wishes of Clark, who wanted to destroy it. At Project Cadmus, the organization's leader revives Corben and begins turning him into a being called Metallo.
22	2	"The Last Children of Krypton"	Glen Winter	Robert Rovner & Caitlin Parrish	October 17, 2016	T13.20152	2.66[27]
Kara and Clark continue operating together in National City before he decides to return to Metropolis. When they encounter Corben, who has turned into Project Cadmus' prototypical cyborg, his Kryptonite-based powers pose a serious threat. The DEO deduces that there is a mole who smuggled the kryptonite out. During a subsequent encounter with Corben, another Metallo prototype goes on a rampage in Metropolis without opposition. Alex finds the mole, but he is killed by Cadmus's leader, a scientist who intends to destroy aliens. Winn builds anti-kryptonite gear for Kara and Clark, who manage to defeat the Metallos with the help of Alex and Hank. Kara promises the Cadmus leader she will find her. Hank entrusts the remaining kryptonite to Clark, who returns to Metropolis. Meanwhile, Cat introduces Kara to the latter's new boss, Snapper Carr, who does not like her and refuses to give her an assignment. Cat advises her to solve the problem herself and announces that she has decided to leave CatCo, leaving James in charge. Kara manages to prove her value to Snapper, who agrees to teach her. At the DEO, the alien man regains consciousness and attacks Kara.
23	3	"Welcome to Earth"	Rachel Talalay	Jessica Queller & Derek Simon	October 24, 2016	T13.20153	2.65[28]
The alien man escapes the DEO. As President Olivia Marsdin arrives in National City to sign an act recognizing the aliens, she is attacked by an unknown alien with the power to shoot fiery energy, believed to be the escapee. Alex encounters police detective Maggie Sawyer at the crime scene, who takes her to a secret bar hosting aliens. They track their target and Winn discovers that the man is from Daxam, Krypton's nearby sister planet. Kara defeats the Daxamite and locks him in the DEO. She refuses to do anything for the Daxamite, being hostile toward him because of her racial views of Daxamites and the feud between Kryptonians and Daxamites. Olivia is attacked again; the assailant is revealed to be a woman, Scorch, who is defeated by Kara, Alex and Maggie. Kara releases the Daxamite, who introduces himself as Mon-El. She tells him that Daxam's population was annihilated and Daxam is a wasteland due to Krypton's destruction. Olivia briefly flashes an alien face as she leaves, unbeknownst to the members of the DEO. Meanwhile, Snapper undermines James' authority, tasking Kara to interview Lena, who reveals that L-Corp has invented an alien detection device. Snapper rejects Kara's first version of article for bias tone. She decides to put aside her personal emotions in order to be a successful reporter. James forces Snapper to stay out of his area. In the bar, Hank encounters M'gann M'orzz, a female Green Martian.
24	4	"Survivors"	James Marshall James Bamford	Paula Yoo & Eric Carrasco	October 31, 2016	T13.20154	2.22[29]
J'onn asks that Mon-El stay at the DEO until he is fully examined. An alien body is found, and the DEO track down the murderer, who is kidnapped by unknown armed men. Maggie and Alex track him down to a secret facility hosting people of high political and economical status run by a woman, later identified as Veronica Sinclair, also known as Roulette. The aliens are forced to duel, sometimes to the death. They spot M'gann as a contestant before Kara intervenes and is attacked by an alien called Draaga, who overpowers her and escapes. J'onn confronts M'gann, who says that she believes herself guilty of surviving the extinction of her species. Veronica abducts J'onn and M'gann. Using Lena, Kara finds the address, where J'onn and M'gann are forced to duel until J'onn convinces her to stop blaming herself and they refuse to continue. When they are attacked by Draaga, Kara arrives and defeats him thanks to Mon-El's advice, dissuading the other aliens from protecting Veronica, who is arrested but later released by orders from higher up. Alex asks Maggie to get a drink before Maggie's date arrives, while Kara decides to train Mon-El. M'gann secretly shapeshifts to reveal that she is a White Martian.
25	5	"Crossfire"	Glen Winter	Gabriel Llanas & Anna Musky-Goldwyn	November 7, 2016	T13.20155	2.47[30]
A group of robbers, led by Chet Miner, starts challenging Supergirl using alien guns. Cadmus demands the repealing of the Amnesty as a solution. Kara deduces that Cadmus is arming Miner's team. Lena holds a fundraiser, which is attacked by Miner and his men. She reveals to Winn that the fundraiser was a ruse for the robbers, and they activate a device that destroys the alien weapons, leading to the robbers' arrest. Miner and his team are killed by Cadmus before he can expose them. The Cadmus leader is revealed to be Lilian, Lena's mother. Meanwhile, Kara takes Mon-El to CatCo for work, but he continuously ignores her commands, leading to being fired. Alex convinces her to let him choose his own path. James starts operating as a vigilante. Winn finds out and initially blames him, but finally decides to help, intending to make a suit for him. Alex learns that Maggie has broken up with her girlfriend and offers her another date, with Maggie realising Alex is a lesbian, and Alex herself accepting the fact.
26	6	"Changing"	Larry Teng	Story by : Greg Berlanti Teleplay by : Andrew Kreisberg & Caitlin Parrish	November 14, 2016	T13.20156	2.35[31]
In Norway, a group of scientists led by Dr. Jones discover an abnormal dead wolf, which causes the mysterious murder of all the scientists except Jones, who is revealed to be infected by a parasite. The DEO finds out that Jones killed the other scientists. Kara gets angry with Mon-El when she finds out that he uses his powers to make money. The DEO predicts Jones' next target and Kara and J'onn attempt to stop him; but the latter drains their powers, becomes larger and stronger and escapes, leaving the pair weakened and unconscious. Alex convinces M'gann to donate blood in order to save J'onn. Jones attacks his target again; but Mon-El intervenes. With his suit ready, James arrives to fight Jones too, taking the alias "Guardian". Kara regains consciousness and attacks Jones, taking Plutonium 239, which he touches, causing him to be overloaded with energy and implodes. James convinces Winn not to tell Kara about his alter ego. Mon-El is abducted by Cadmus. Meanwhile, Alex tells Kara about her feelings for Maggie. Kara encourages her to date Maggie, who reveals that she prefers just a friendship, upsetting Alex.
27	7	"The Darkest Place"	Glen Winter	Robert Rovner & Paula Yoo	November 21, 2016	T13.20157	2.61[32]
A new vigilante appears in National City and starts killing some of the criminals James secures. Mon-El makes an unsuccessful escape attempt. Lillian demands Kara come to Cadmus by threatening him. Kara arrives and is overpowered by the real Hank, who is enhanced and called the "Cyborg Superman". Winn deduces that the vigilante targets the murderers who were exonerated. The former finds the next target, with James managing to defeat the serial killer, who is arrested. Lillian, whom Kara identifies, forces her to deplete her powers, giving the former the chance to take blood samples of her. Jeremiah saves Kara and Mon-El and helps them escape by staying behind. Kara finally approves the Guardian while Alex finds out about his true identity. Mon-El develops feelings for Kara. Cyborg Superman arrives at the Fortress of Solitude and uses Kara's blood to trick the system into recognizing him as her, demanding to know about the "Medusa" project. Meanwhile, J'onn begins having hallucinations and finds out about M'gann, whom he locks in the DEO. She warns him that the transfusion will turn him into a White Martian. Alex finally accepts Maggie as just a friend.
28	8	"Medusa"	Stefan Pleszczynski	Jessica Queller & Derek Simon	November 28, 2016	T13.20158	3.53[33]
Cyborg Superman unleashes a virus in a bar, killing all aliens there except Mon-El, who is quarantined by DEO. Eliza, visiting for Thanksgiving, determines that the virus is Kryptonian. At the Fortress of Solitude, Kara learns that Henshaw was after "Medusa", a virus created by her father, Zor-El, to kill non-Kryptonian in case of alien invasion. At L-Corp, she stops Henshaw from getting the isotope required to disperse Medusa. Lena refuses to help when Kara reveals that Lillian is Cadmus' leader. Later, Lena willingly gives Lillian the isotope. Kara and J'onn confront the Luthors and Henshaw before Medusa is launched via rocket. J'onn fights Henshaw, becoming a White Martian, while Kara chases the rocket, which explodes and disperses Medusa. However, Lena has double-crossed Lillian and rendered the virus inert. Lillian is arrested but Henshaw escapes. Eliza cures Mon-El and uses Medusa to restore J'onn's Green Martian form. Alex comes out to Eliza, who supports her. Later, Maggie and Alex kiss after Maggie admits she does have feelings for Alex. An unknown alien race is searching for Mon-El. Barry Allen and Cisco Ramon arrive from another Earth to enlist Kara's help. The episode ends with a scene setting up the crossover event "Invasion!" that begins on The Flash season 3 episode 8, continues on Arrow season 5 episode 8 and concludes on Legends of Tomorrow season 2 episode 7.[34][35]
29	9	"Supergirl Lives"[36]	Kevin Smith	Story by : Andrew Kreisberg Teleplay by : Eric Carrasco & Jess Kardos	TBA	T13.20159	TBD
The title of the episode is a nod to the script Smith wrote for the unproduced film Superman Lives.[37]

Ratings

Season 1 (2015–16)

No.	Title	Air date	Rating/share (18–49)	Viewers (millions)	DVR (18–49)	DVR viewers (millions)	Total (18–49)	Total viewers (millions)
1	"Pilot"	October 26, 2015	3.1/9	12.96[3]	1.3	3.97	4.4	16.92[38]
2	"Stronger Together"	November 2, 2015	2.2/7	8.87[4]	1.0	3.33	3.2	12.20[39]
3	"Fight or Flight"	November 9, 2015	1.7/5	8.07[5]	1.0	2.83	2.7	10.90[40]
4	"How Does She Do It?"	November 23, 2015	1.5/5	7.19[9]	0.8	2.26	2.3	9.45[41]
5	"Livewire"	November 16, 2015	1.8/6	7.77[10]	0.8	N/A	2.6[42]	N/A
6	"Red Faced"	November 30, 2015	1.6/5	8.02[11]	0.8	2.49	2.4	10.51[43]
7	"Human for a Day"	December 7, 2015	1.5/5	7.67[12]	0.9	2.32	2.4	9.98[44]
8	"Hostile Takeover"	December 14, 2015	1.5/5	7.28[13]	0.8	2.27	2.3	9.55[45]
9	"Blood Bonds"	January 4, 2016	1.9/6	8.75[14]	0.7	N/A	2.6[46]	N/A
10	"Childish Things"	January 18, 2016	1.8/6	8.77[15]	0.8	2.18	2.6	10.95[47]
11	"Strange Visitor from Another Planet"	January 25, 2016	1.8/5	7.90[16]	0.7	2.21	2.5	10.11[48]
12	"Bizarro"	February 1, 2016	1.5/5	6.68[17]	0.8	2.18	2.3	8.83[49]
13	"For the Girl Who Has Everything"	February 8, 2016	1.8/6	7.92[18]	N/A	N/A	N/A	N/A
14	"Truth, Justice and the American Way"	February 22, 2016	1.5/5	7.25[19]	N/A	N/A	N/A	N/A
15	"Solitude"	February 29, 2016	1.4/5	6.69[20]	0.7	2.16	2.1	8.85[50]
16	"Falling"	March 14, 2016	1.3/4	6.53[21]	0.7	N/A	2.0[51]	N/A
17	"Manhunter"	March 21, 2016	1.3/4	6.00[22]	0.7	2.07	2.0	8.07[52]
18	"Worlds Finest"	March 28, 2016	1.7/6	7.17[23]	0.8	2.47	2.5	9.63[53]
19	"Myriad"	April 11, 2016	1.3/5	6.12[24]	0.7	2.04	2.0	8.16[54]
20	"Better Angels"	April 18, 2016	1.3/4	6.11[25]	N/A	N/A	N/A	N/A

Season 2 (2016)

No.	Title	Air date	Rating/share (18–49)	Viewers (millions)	DVR (18–49)	DVR viewers (millions)	Total (18–49)	Total viewers (millions)
1	"The Adventures of Supergirl"	October 10, 2016	1.1/3	3.06[26]	N/A	N/A	N/A	N/A
2	"The Last Children of Krypton"	October 17, 2016	0.9/3	2.66[27]	0.6	1.42	1.5	4.08[55]
3	"Welcome to Earth"	October 24, 2016	0.8/3	2.65[28]	N/A	1.37	N/A	4.03[56]
4	"Survivors"	October 31, 2016	0.6/2	2.22[29]	0.6	1.59	1.2	3.80[57]
5	"Crossfire"	November 7, 2016	0.7/3	2.47[30]	0.7	1.71	1.4	4.18[58]
6	"Changing"	November 14, 2016	0.7/3	2.35[31]	0.6	1.42	1.3	3.85[59]
7	"The Darkest Place"	November 21, 2016	0.9/3	2.61[32]	TBD	TBD	TBD	TBD
8	"Medusa"	November 28, 2016	1.1/4	3.53[33]	TBD	TBD	TBD	TBD

References

1. Porter, Rick (June 17, 2016). "The CW fall TV 2016 premiere dates: 'The Flash' and 'No Tomorrow' kick off October rollout". TV by the Numbers. Retrieved June 17, 2016.
2. Harewood, David (May 12, 2016). "22 episode order. Vancouver. CW. Details to come.#season2 #off2bed #Johannesburg". Twitter. Retrieved May 12, 2016.
3. Porter, Rick (November 3, 2015). "Monday final ratings: 'Supergirl' and 'Blindspot' adjust down, 'Big Bang Theory' adjusts up". TV by the Numbers. Tribune Digital Ventures. Retrieved November 4, 2015.
4. Porter, Rick (November 4, 2015). "Monday final ratings: 'The Voice' and 'NCIS: LA' adjust up, 'Supergirl' holds". TV by the Numbers. Tribune Digital Ventures. Retrieved November 4, 2015.
5. Porter, Rick (November 10, 2015). "Monday final ratings: 'NCIS: LA' adjusts up, everything else holds". TV by the Numbers. Tribune Digital Ventures. Retrieved November 10, 2015.
6. Ausiello, Michael (November 15, 2015). "CBS Replaces Monday's Terrorism-Themed Supergirl, NCIS: Los Angeles Episodes in Wake of Paris Attacks". TVLine. Penske Media Corporation. Retrieved November 15, 2015.
7. "Shows A-Z – supergirl on cbs". The Futon Critic. Futon Media. Retrieved March 17, 2016.
8. Lambert, David (June 2, 2016). "Supergirl - 'The Complete 1st Season' Press Release for DVDs, Blu-rays". TV Shows on DVD. Retrieved August 24, 2016.
9. Porter, Rick (November 24, 2015). "Monday final ratings: 'The Voice' adjusts up, 'Castle' adjusts down to season average". TV by the Numbers. Tribune Digital Ventures. Retrieved November 24, 2015.
10. Porter, Rick (November 17, 2015). "Monday final ratings: 'Jane the Virgin' adjusts down but still hits season high, 'Scorpion' adjusts up". TV by the Numbers. Tribune Digital Ventures. Retrieved November 17, 2015.
11. Porter, Rick (December 2, 2015). "Monday final ratings: 'Superstore' adjusts down but still solid, 'Crazy Ex-Girlfriend' adjusts down". TV by the Numbers. Retrieved December 2, 2015.
12. Porter, Rick (December 8, 2015). "Monday final ratings: 'Telenovela' adjusts up slightly, 'Christmas Light Fight' adjusts down". TV by the Numbers. Retrieved December 9, 2015.
13. Porter, Rick (December 15, 2015). "Monday final ratings: 'Scorpion' and 'Jane the Virgin' adjust down". TV by the Numbers. Retrieved December 15, 2015.
14. Porter, Rick (January 6, 2016). "Monday final ratings: 'Supergirl,' 'Scorpion' and 'Superstore' adjust up". TV by the Numbers. Retrieved January 6, 2016.
15. Porter, Rick (January 20, 2016). "Monday final ratings: 'The Bachelor,' 'Superstore' and 'Masterchef Celebrity Showdown' adjust up". TV by the Numbers. Retrieved January 20, 2016.
16. Porter, Rick (January 26, 2016). "Monday final ratings: 'Scorpion' and 'Superstore' adjust up". TV by the Numbers. Retrieved January 26, 2016.
17. Porter, Rick (February 2, 2016). "Monday final ratings: 'X-Files,' 'Lucifer' and 'The Bachelor' adjust up". TV by the Numbers. Retrieved February 2, 2016.
18. Porter, Rick (February 9, 2016). "Monday final ratings: 'The Bachelor' and 'Scorpion' adjust up". TV by the Numbers. Retrieved February 9, 2016.
19. Porter, Rick (February 23, 2016). "Monday final ratings: 'Bachelor' adjusts up, 'Crazy Ex-Girlfriend' adjusts down". TV by the Numbers. Retrieved February 23, 2016.
20. Porter, Rick (March 1, 2016). "Monday final ratings: 'Blindspot', 'Gotham' and all others hold". TV by the Numbers. Retrieved March 1, 2016.
21. Porter, Rick (March 15, 2016). "Monday final ratings: 'The Bachelor' and 'Scorpion' adjust up, 'Blindspot' and 'After the Final Rose' adjust down". TV by the Numbers. Retrieved March 15, 2016.
22. Porter, Rick (March 22, 2016). "Monday final ratings: 'The Voice' adjusts up, 'Blindspot' adjusts down". TV by the Numbers. Retrieved March 22, 2016.
23. Porter, Rick (March 29, 2016). "Monday final ratings: 'Supergirl', 'Blindspot' and everything else hold". TV by the Numbers. Retrieved March 29, 2016.
24. Porter, Rick (April 12, 2016). "Monday final ratings: 'The Voice' adjusts up, 'Crazy Ex-Girlfriend' and 'Jane the Virgin' adjust down". TV by the Numbers. Retrieved April 12, 2016.
25. Porter, Rick (April 19, 2016). "Monday final ratings: 'Supergirl' finale adjusts up, 'NCIS: LA' adjusts down". TV by the Numbers. Retrieved April 19, 2016.
26. Porter, Rick (October 11, 2016). "'Timeless', 'Conviction', 'DWTS', 'Lucifer' adjust down, 'Big Bang' adjusts up: Monday final ratings". TV by the Numbers. Retrieved October 11, 2016.
27. Porter, Rick (October 18, 2016). "'Gotham', 'The Voice', 'Big Bang', 'DWTS' adjust up, 'Conviction' and '2 Broke Girls' adjust down: Monday final ratings". TV by the Numbers. Retrieved October 18, 2016.
28. Porter, Rick (October 25, 2016). "'Kevin Can Wait' adjusts up, 'Timeless', 'Supergirl', and 'Jane the Virgin' adjust down: Monday final ratings". TV by the Numbers. Retrieved October 25, 2016.
29. Porter, Rick (November 1, 2016). "'Gotham' adjusts up, CBS shows all adjust down: Monday final ratings". TV by the Numbers. Retrieved November 1, 2016.
30. Porter, Rick (November 8, 2016). "'Jane the Virgin', 'Odd Couple' and 'Conviction' adjust down: Monday final ratings". TV by the Numbers. Retrieved November 8, 2016.
31. Porter, Rick (November 15, 2016). "'2 Broke Girls' adjusts up, 'Supergirl' and 'Jane the Virgin' adjust down: Monday final ratings". TV by the Numbers. Retrieved November 15, 2016.
32. Porter, Rick (November 22, 2016). "'Supergirl', 'Jane the Virgin', 'Odd Couple', 'Conviction' adjust down: Monday final ratings". TV by the Numbers. Retrieved November 22, 2016.
33. Porter, Rick (November 30, 2016). "'Voice' adjusts up; 'Gotham', 'Lucifer', 'Jane the Virgin' and ABC adjust down; Monday final ratings". TV by the Numbers. Retrieved November 30, 2016.
34. Abrams, Natalie (October 18, 2016). "Arrow boss teases 100th episode, crossover catalyst". Entertainment Weekly.
35. Burlingame, Russ (October 23, 2016). "Marc Guggenheim Reveals the Title Of Arrow's 100th Episode". ComicBook.com. Retrieved October 23, 2016.
36. Couto, Anthony (October 14, 2016). "KEVIN SMITH'S SUPERGIRL EPISODE TITLE REVEALED — AND IT'S A REFERENCE". Comic Book Resources. Retrieved October 14, 2016.
37. Melrose, Kevin (August 13, 2016). "TITLE OF KEVIN SMITH'S "SUPERGIRL" EPISODE NEARLY BRINGS HIM TO TEARS". Comic Book Resources. Retrieved August 13, 2016.
38. Porter, Rick (November 16, 2015). "Broadcast Live +7 ratings: 'Big Bang Theory' and 'Blindspot' top week 6, 'Quantico' doubles in 18–49 and viewers". TV by the Numbers. Retrieved November 16, 2015.
39. Porter, Rick (November 23, 2015). "Broadcast Live +7 ratings, week 7: 'Elementary' is still a strong DVR show". TV by the Numbers. Retrieved November 23, 2015.
40. Porter, Rick (December 1, 2015). "Broadcast Live +7 ratings, week 8: 'Empire,' 'Big Bang Theory' and 'Quantico' top charts for Nov. 9–15". TV by the Numbers. Retrieved December 1, 2015.
41. Porter, Rick (December 14, 2015). "Broadcast Live +7 ratings, week 10: 'Blindspot' is officially* the biggest gainer in Thanksgiving week". TV by the Numbers. Retrieved December 14, 2015.
42. Porter, Rick (December 7, 2015). "Broadcast Live +7 ratings, week 9: 'Big Bang Theory' makes the biggest gains". TV by the Numbers. Retrieved December 7, 2015.
43. Porter, Rick (December 21, 2015). "Broadcast Live +7 ratings, week 11: 'Empire' fall finale on top, 'Vampire Diaries' leads percentage gains". TV by the Numbers. Retrieved December 21, 2015.
44. Porter, Rick (December 29, 2015). "Broadcast Live +7 ratings: 'Big Bang Theory' gets biggest bump of the season in week 12, 5 shows double in 18–49". TV by the Numbers. Retrieved December 29, 2015.
45. Porter, Rick (January 5, 2016). "Broadcast Live +7 ratings: 'Big Bang Theory' and 'Jane the Virgin' lead a light week 13". TV by the Numbers. Retrieved January 5, 2016.
46. Porter, Rick (January 25, 2016). "Broadcast Live +7 ratings: 'Shades of Blue' premiere gets a good lift in week 16". TV by the Numbers. Retrieved January 25, 2016.
47. Porter, Rick (February 8, 2016). "Broadcast Live +7 ratings: 'X-Files' premiere dominates week 18, 'Limitless' doubles". TV by the Numbers. Retrieved February 8, 2016.
48. Porter, Rick (February 16, 2016). "Broadcast Live +7 ratings: 'Lucifer' premiere shows solid growth in week 19". TV by the Numbers. Retrieved February 16, 2016.
49. Porter, Rick (February 22, 2016). "Broadcast Live +7 ratings: 'Big Bang Theory' gains the most, 'Vampire Diaries' and 'Shades of Blue' double". TV by the Numbers. Retrieved February 22, 2016.
50. Porter, Rick (March 21, 2016). "Broadcast Live +7 ratings: 'Grey's Anatomy,' 'Blindspot,' 'Jane' and 'Quantico' top week 24". TV by the Numbers. Retrieved March 21, 2016.
51. Porter, Rick (April 5, 2016). "Broadcast Live +7 ratings: 'Modern Family' and 'Blindspot' gain the most for March 14–20". TV by the Numbers. Retrieved April 5, 2016.
52. Porter, Rick (April 11, 2016). "Broadcast Live +7 ratings: 'Modern Family' tops the week of March 21–27, 4 shows double". TV by the Numbers. Retrieved April 11, 2016.
53. Porter, Rick (April 18, 2016). "Broadcast Live +7 ratings: 'The Big Bang Theory' and 'Empire' lead the week of March 28 – April 3". TV by the Numbers. Retrieved April 18, 2016.
54. Porter, Rick (May 2, 2016). "Broadcast Live +7 ratings: 'Empire' and 'Blacklist' have biggest gains, 4 shows double". TV by the Numbers. Retrieved May 2, 2016.
55. Porter, Rick (November 4, 2016). "'This Is Us' and 'Agents of SHIELD' score in broadcast Live +7 ratings for Oct. 17-23". TV by the Numbers. Retrieved November 4, 2016.
56. Porter, Rick (November 10, 2016). "'This Is Us,' 'Designated Survivor' stay on top in broadcast Live +7 ratings for Oct. 24-30". TV by the Numbers. Retrieved November 10, 2016.
57. Porter, Rick (November 17, 2016). "13 shows double, 'This Is Us' & 'Big Bang' lead broadcast Live +7 ratings for Oct. 31-Nov. 6". TV by the Numbers. Retrieved November 17, 2016.
58. Porter, Rick (November 23, 2016). "'Designated Survivor' makes more big gains in week 8 broadcast Live +7 ratings". TV by the Numbers. Retrieved November 23, 2016.
59. Porter, Rick (December 1, 2016). "'This Is Us,' 'Big Bang,' 'Designated Survivor' are the Big Three in week 9 broadcast Live +7 ratings". TV by the Numbers. Retrieved December 1, 2016.

General references

• "Shows A-Z – supergirl on cw". The Futon Critic. Retrieved September 2, 2016.