Friend (novel)

Friend is a 1985 science fiction horror novel by Diana Henstell, about a young man who tries to help a dying friend survive by implanting a microchip into her, only to find that it turns her into a monster. The novel was adapted into the 1986 film Deadly Friend, directed by Wes Craven and screenplay by Bruce Joel Rubin.

Plot

Paul "Piggy" Conway moves to a small town after his parents get divorced. He befriends a girl named Samantha, but their friendship is cut short when her abusive father throws her down the stairs, mortally injuring her. Piggy tries to save her by implanting a microchip in her, but the reanimated Samantha is much more dangerous than she appears.