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House on Haunted Hill is a 1959 American B movie horror film from Allied Artists. It was directed by William Castle, written by Robb White, and starring Vincent Price. It is the tale of five people invited to stay the night in a haunted house by an eccentric millionaire, Fredrick Loren (Vincent Price), who is throwing the "party" for his fourth wife, Annabelle (Carol Ohmart), with the stipulation that the power will be out and all doors will be locked at midnight, allowing no accessible escape. Anyone who stays in the house for the entire night, given that they are still alive, will each receive $10,000.
The film has since become public domain, available on House On Haunted Hill available for free download at the Internet Archive or watch online compliments of TCManiacs right here: