Quote from : Gosford Park: The Shooting Script Book

Mr Weissman -- Tell us about the film you're going to make. Oh, sure. It's called "Charlie Chan In London". It's a detective story. Set in London? Well, not really. Most of it takes place at a shooting party in a country house. Sort of like this one, actually. Murder in the middle of the night, a lot of guests for the weekend, everyone's a suspect. You know, that sort of thing. How horrid. And who turns out to have done it? Oh, I couldn't tell you that. It would spoil it for you. Oh, but none of us will see it.