American horror in which two teenage girls get more than they bargained for when their prank calls land them with serious consequences. When Libby (Andi Garrett) and Kit (Sara Lane) spend an evening picking random phone numbers and in a sinister tone tell the unwitting receiver of the call 'I saw what you did, I know who you are.', they are unaware that one of their victims, Steve Marak (John Ireland), has carried out an abhorrent act which he presumed he had committed unnoticed. When he sets out to find out who the prank callers are, the girls have no idea what lays in wait for them. The cast also includes Joan Crawford and Leif Erikson.