The Killer Must Kill Again

Cristina Galbó stars as a young woman who's get captured by a psycho killer. He ties her up hand and foot and leaves her in a cellar with the body of a woman whom he had killed earlier.

But Galbo, realizing the killer left the knife in the body of his victim, tries to retrieve it in order to free herself. Directed by Luigi Cozzi, The Killer Must Kill Again is a superb thriller that's loaded with plenty of suspense. You can get the scene (which I didn't clip) right here.