Agatha

Dustin Hoffman

Wally Stanton

Vanessa Redgrave

Agatha Christie

Timothy Dalton

Archie Christie

Helen Morse

Evelyn

Celia Gregory

Nancy Neele

Paul Brooke

John Foster

Carolyn Pickles

Charlotte Fisher

Timothy West

Kenward

Tony Britton

William Collins

Alan Badel

Lord Brackenbury

Robert Longden

Pettelson

Yvonne Gilan

Mrs. Braithwaite

Sandra Voe

Therapist

Barry Hart

Supt. MacDonald

David Hargreaves

Sgt. Jarvis

Tim Seely

Capt. Rankin

Christopher Fairbank

Luland

Liz Smith

Flora

Peter Arne

Hotel Manager

Hubert Rees

Official at Literary Luncheon

Donald Nithsdale

Uncle Jones

Jill Summers

Nancy's Aunt

Geoff Tomlinson

Hotel Receptionist

John Joyce

Hotel Waiter

Irene Sutcliffe

Dress Shop Manageress

Ann Francis

Jane

Hope Johnstone

Royal Baths Clerk

John Ludlow

Royal Baths Clerk

Ray Gatenby

Official at Literary Luncheon

Tommy Hunter

Pierrot

Bert Ward

Pierrot

Harry Segal

Pierrot

Harry Segall

Hotel Trio

Jim Archer

Hotel Trio

Reginald Kilbey

Hotel Trio

Jonathan Benson

Head Waiter (uncredited)

Harry Fielder

Policeman (uncredited)

Tony Haygarth

Man Drinking Tea (uncredited)

Juba Kennerley

Gent Watching Billiards (uncredited)

Breandán O'Connor

Bellboy (uncredited)

Stan Richards

Hotel Porter (uncredited)

Pamela Austin

Pierrot