The Third Man (1949)

Continuity mistake: When the butler tells of Harry Lime's death, at the start of the conversation he can hardly speak English. As the conversation goes on, his English gets better and better, until at the end it's perfect with just an accent.

Other mistake: Near the end, Harry Lime is trying to escape through the sewers of Vienna. There is an opening to the street; Harry puts all his fingers through the holes, trying to lift the metal plate, but Harry has a pistol in his right hand; there is no way he can poke all his fingers through with his right hand with the pistol in it.

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Trivia: Orson Welles' line "...you know what the fellow said... In Italy for thirty years under the Borgias they had warfare, terror, murder, bloodshed - but they produced Michelangelo, Leonardo da Vinci, and the Renaissance. In Switzerland they had brotherly love, five hundred years of democracy and peace, and what did that produce? The cuckoo clock." was not in the script. Welles just wanted to say it, so he did, much to the anger of the original author. He thought it was a terrible piece of writing but it has turned out to be the most memorable line in the entire film.

Trivia: Despite his relatively high billing, Orson Welles has only five minutes of screen time.

Harry Lime: What did you want me to do? Be reasonable. You didn't expect me to give myself up... 'It's a far, far better thing that I do.' The old limelight. The fall of the curtain. Oh, Holly, you and I aren't heroes. The world doesn't make any heroes outside of your stories.

Martins: I'd make comic faces... and stand on my head and grin at you between my legs... and tell all sorts of jokes. I wouldn't stand a chance, would I?

British MP: I'm sorry, Miss, it's orders. We can't go against the protocol.
Anna Schmidt: I don't even know what protocol means.
British MP: Neither do I, Miss.