Plot hole: When Mr. Loren introduces his wife to everyone, he tells her, "You know Watson Pritchard of course." That can't be because at the beginning of the movie the characters are asking if any of them know Frederick Loren. No one personally knows him including Watson Pritchard. He says, "I don't know him, all the details about renting the house were done by mail." If that's the case, it's impossible for Annabelle to know Pritchard since Frederick invited all the guests without his wife's approval. (00:34:05)
DrLoomis1978
30th Oct 2018
House on Haunted Hill (1959)
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Suggested correction: By no means a correction, but I always took this line as a reference to the fact that in the film's universe the case of the house being haunted, multiple murders on site, etc., is well known, and thus Watson Pritchard by default is already infamous/known of by the wife of Frederick Loren, rather than a reference to them personally knowing each other before the events shown on screen.