- The Bloody Bathtub scene, featuring a vivid red arm emerging from a sea of blood in an otherwise black and white film was not colorized after the fact. Instead, William Castle simulated a monochrome look by painting the set in gray, had the wardrobe done in gray and put gray makeup and hair-dye on the actress. The whole scene was indeed shot in color, but only the water and the arm had any actual color about them.
- "Scream!" by The Misfits was inspired by this film.
Trivia / The Tingler