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