I Saw What You Did

I Saw What You Did is a 1965 American thriller-horror released by Universal Pictures and starring Joan Crawford and John Ireland. The plot follows two teenage girls who find themselves in serious danger after making a prank phone call to a man who just murdered his wife. The screenplay by William P. McGivern was based upon the 1964 novel Out of the Dark by Ursula Curtiss. The film was produced and directed by William Castle. Plot When teenage friends Libby Mannering (Andi Garrett) and Kit Austin (Sara Lane) are home alone with Libby's younger sister Tess (Sharyl Locke), they amuse themselves by randomly dialing telephone numbers asking prank questions, telling whoever answers: "I saw what you did, and I know who you are." Libby places a call to Steve Marak (John Ireland), a man who had just murdered his wife Judith (Joyce Meadows) and disposed of her body in the woods. Believing he has been found out, Marak wants to track down the caller in order to silence her. Marak's neighbor Amy (Joan Crawford), who is in love with him and had been trying to woo him away from his wife, listens in on the line while Marak is speaking with Libby. Intrigued by Marak's voice, Libby takes Tess and a frightened Kit along on a drive to Marak's address. Amy discovers Libby and chases her off, thinking that Libby is Marak's lover, inadvertently saving Libby from being murdered by Marak, who has seen her and grabbed a knife. Amy snatches the registration card from the car before Libby drives away and gives it to Marak, telling him to keep it as a souvenir of his last fling. Amy tries to blackmail him into marrying her, telling him she knows about the murder, but he stabs her to death after they have a drink. With Libby's address and phone number from the car registration, Marak calls to ask if her parents are home and then sets out to the Mannering home. Libby's mother, 90 miles away in Santa Barbara with her husband, is frantic with worry when no one answers the home phone and has her husband call the police to check the house. A patrolman visits and finds that the three girls are safe.