Deadly Friend is an American 1986 science fiction horror film directed by Wes Craven. It is based on the novel Friend by Diana Henstell, which was adapted for the screen by Bruce Joel Rubin.Originally, the film was a sci-fi thriller without any graphic scenes, with a bigger focus on plot and character development, and a dark love story centering around the two main characters, which were not typical aspects of Craven's previous films.