Peter Ustinov
Hercule Poirot
Jean Stapleton
Ariadne Oliver
Constance Cummings
Amy Folliatt
Tim Pigott-Smith
Sir Stubbs
Kenneth Cranham
Insp. Bland
Susan Wooldridge
Amanda Brewis
Christopher Guard
Alec Legge
Nicollette Sheridan
Hattie Stubbs
Ralph Arliss
Michael Weyman
Caroline Langrishe
Sally Legge
Leslie Schofield
Mr Tucker
Pippa Hinchley
Marlene Tucker (uncredited)
Vicky Murdock
Marilyn Tucker
Jimmy Gardner
Old Merdell (uncredited)
Sandra Dickinson
Marilyn Gale
James Gaddas
Young Foreign Man
Harry Fielder
Tombola Man (uncredited)