Cast e produzione
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Albert FinneyHercule Poirot - Lauren BacallMrs. Harriet Belinda Hubbard
- Martin BalsamSignor Bianchi
- Ingrid BergmanGreta Ohlsson
- Jacqueline BissetCountess Andrenyi
- Jean-Pierre CasselPierre Paul Michel, the Conductor (as Jean Pierre Cassel)
- Sean ConneryColonel Arbuthnot
- John GielgudMr. Beddoes
- Wendy HillerPrincess Dragomiroff
- Anthony PerkinsHector MacQueen
- Vanessa RedgraveMary Debenham
- Rachel RobertsHildegarde
- Richard WidmarkRatchett/Cassetti
- Michael YorkCount Andrenyi
- Colin BlakelyMr. Hardman
- George CoulourisDr. Constantine
- Sidney LumetRegista
- John Knatchbull, 7th Baron BrabourneProduzione
- Richard GoodwinProduzione
- Agatha ChristieSceneggiatura
- Paul DehnSceneggiatura
- Anthony ShafferSceneggiatura