Spellbound

"Cindy and her friends want to clear her boyfriend's name when he is suspected of murdering his previous girlfriend, but returning together to the place she was killed may doom them to a similar fate."@en
"Jason Whitfield and his friends return to the place where his girlfriend was killed but instead of finding clues they are met with an unimaginable horror."
"Alfred Hitchcock takes on Sigmund Freud in this thriller in which psychologist Ingrid Bergman tries to solve a murder by unlocking the clues hidden in the mind of amnesiac suspect Gregory Peck. Among the highlights is a bizarre dream sequence seemingly designed by Salvador Dali--complete with huge eyeballs and pointy scissors. Although the film is in black and white, the original release contained one subliminal blood-red frame, appearing when a gun pointed directly at the camera goes off. Spellbound is one of Hitchcock's strangest and most atmospheric films, providing the director with plenty of opportunities to explore what he called "pure cinema"--I.e., the power of pure visual associations. Miklós Rózsa's haunting score (which features a creepy theremin) won an Oscar, and the movie was nominated for best picture, director, supporting actor (Michael Chekhov), cinematography, and special visual effects."