Peter Ustinov
Hercule Poirot
Acting
James Mason
Odell Gardener
Acting
Sylvia Miles
Myra Gardener
Acting
Roddy McDowall
Rex Brewster
Acting
Maggie Smith
Daphne Castle
Acting
Jane Birkin
Christine Redfern
Acting
Nicholas Clay
Patrick Redfern
Acting
Diana Rigg
Arlena Stuart Marshall
Acting
Denis Quilley
Kenneth Marshall
Acting
Colin Blakely
Horace Blatt
Acting
Emily Hone
Linda Marshall
Acting
Paul Antrim
Police Inspector
Acting
Cyril Conway
Police Surgeon
Acting
John Alderson
Police Sergeant
Acting
Richard Vernon
Flewitt
Acting
Dimitri Andreas
Gino
Acting
Robert Dorning
Concierge
Acting
Barbara Hicks
Flewitt's Secretary
Acting
Walter Henry
Waiter (uncredited)
Acting
Eric Kent
Desk Sergeant (uncredited)
Acting
Guy Standeven
Vicar on Train (uncredited)
Acting