Revealing mistake: When the house has been locked down at the beginning of the film no moonlight could come in, however when the guests are being shown the coffin with the guns in there is a shaft of bright moonlight shining on to it.
House on Haunted Hill (1999)
Plot summary
Directed by: William Malone
Starring: Famke Janssen, Geoffrey Rush, Taye Diggs, Peter Gallagher
Six guests are invited to Evelyn Stockard Price's birthday...Steven Price, Jennifer Janzen, Eddie Baker, Donald Blackburn, Melissa Marr, and Evelyn herself. The only problem? Those weren't the people on Price's list. When the six guests are trapped in the house with Watson Pritchett, the man Price rented the house from, the spirits within the house want revenge for something that happened long ago.
More mistakes in House on Haunted Hill
Melissa Marr: Now, that's enter-fucking-tainment.
Trivia: The Terror Incognita roller coaster is actually The Hulk roller coaster in Universal Studios, Orlando.
More questions & answers from House on Haunted Hill
Answer: The Darkness thought he was lying to save himself, everyone killed had the seven deadly sins. Greed, Lust, Envy, Sloth, Gluttony, Wrath and Pride.