Albert Finney (Hercule Poirot), Lauren Bacall (Mrs. Harriet Hubbard), Ingrid Bergman (Greta Ohlsson), Sean Connery (Col. Arbuthnot), Martin Balsam (Bianchi), Michael York (Graf Andrenyi), Jacqueline Bisset (Gräfin Elena Andrenyi), Vanessa Redgrave (Mary Debenham), John Gielgud (Beddoes), Jean-Pierre Cassel (Pierre Paul Michel), Sir John Gielgud (Beddoes), Anthony Perkins (Hector McQueen), Wendy Hiller (Prinzessin Dragomiroff), George Coulouris (Arzt), Colin Blakely (Hardman), Rachel Roberts (Hildegarde), Denis Quilley (Foscarelli), Richard Widmark (Ratchett), Vernon Dobtcheff (Concierge)