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