Chris and Jack have been friends since childhood, but Jack suffers from schizophrenia. Chris begins dating Anna, which causes Jack to develop an unhealthy obsession with her. Anna discovers Jack's collection of photos of her and is frightened by his confession of feelings for her. When Anna refuses Jack and says she loves Chris, Jack threatens her with a gun. Anna shoots Jack in self-defense, causing him to fall down the stairs and die. Anna is then visited by a detective investigating Jack's death and has flashbacks to the traumatic events.