I Saw What You Did (1965) - I watched this for the upcoming 1965 movie list.
Teenagers Kit Austin, (Sarah Lane), and her best friend Libby Mannering, (Andi Garrett), are babysitting Libby's younger sister Tess, (Sharyl Locke), when they get bored and start making phony phone calls. (Remember, back in 1965 there was no caller ID.) One of their favorite pranks is calling someone and telling them "I saw what you did, and I know who you are.". What they don't realize is that the man they called, Steve Marak, (John Ireland), had just murdered his wife and buried her body in the woods.
This is a pretty good movie, but it's not as suspenseful as I had hoped. It has some suspense, but it's more of a drama than a really good suspense movie. Joan Crawford steals the movie as Amy Nelson, Marak's neighbor. Some of the scenes of the girls laughing and giggling are kind of annoying, and the wife's murder scene looks like a direct ripoff of Psycho, but the movie seems to get better as it goes along. And I have mixed feelings about the ending.