House on Haunted Hill (Horror, 1959)

"House on Haunted Hill" (1959) is a classic horror film that follows eccentric millionaire Frederick Loren, who invites five guests to spend a night in a supposedly haunted mansion with the promise of a $10,000 reward if they survive. The plot thickens as strange occurrences unfold, blurring the lines between psychological trickery and genuine supernatural events. Directed by William Castle, the film is known for its campy tone, inventive scares, and a memorable twist involving a vat of acid. It’s a suspenseful, low-budget gem that leans heavily on atmosphere and gimmicks, like the "Emergo" theater stunt where a skeleton flew over audiences.
Details: Starring Vincent Price as Frederick Loren, Carol Ohmart as Annabelle Loren, Richard Long as Lance Schroeder, Alan Marshal as Dr. David Trent, Carolyn Craig as Nora Manning, Elisha Cook Jr. as Watson Pritchard, and Julie Mitchum as Ruth Bridgers. Directed by William Castle, produced by Robb White, with a runtime of 75 minutes. Released by Allied Artists Pictures.