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

Caroline Langrishe

Sally Legge

Leslie Schofield

Mr Tucker

Marjorie Yates

Mrs Tucker

Pippa Hinchley

Marlene Tucker (uncredited)

Jimmy Gardner

Old Merdell (uncredited)

Sandra Dickinson

Marilyn Gale

Jack Ellis

Policeman

James Gaddas

Young Foreign Man

Alan Parnaby

Boatman