Carl Schenkel Director Alfred Molina Hercule Poirot Actor Meredith Baxter Mrs. Caroline Hubbard Actor Leslie Caron Senora Alvarado Actor Amira Casar Helena von Strauss Actor Nicolas Chagrin Pierre Michel Actor Tasha de Vasconcelos Vera Rossakoff Actor David Hunt Bob Arbuthnot Actor Adam James William MacQueen Actor Peter Strauss Mr. Samuel Ratchett Actor Fritz Wepper Wolfgang Bouc Actor Kai Wiesinger Philip von Strauss Actor Natasha Wightman Mary Debenham Actor Stephen Harrigan Writer Marion Rosenberg Producer Daniel H. Blatt Executive Producer Jeffrey S. Grant Executive Producer Phil Clymer Executive Producer Rex Maidment Cinematographer Henk Van Eeghen Film Editing Christopher Franke Original Music Edgar Rothermich Original Music Paul Rowan Production Design Jane Robinson Costume Design