Oliver Reed

Ivan Dragomiloff

Diana Rigg

Sonya Winter

Telly Savalas

Lord Bostwick

Curd Jürgens

General von Pinck

Philippe Noiret

Monsieur Lucoville

Warren Mitchell

Herr Weiss

Beryl Reid

Madame Otero

Clive Revill

Cesare Spado

Kenneth Griffith

Monsieur Popescu

Vernon Dobtcheff

Baron Muntzof

Annabella Incontrera

Eleanora Spado

Jess Conrad

Angelo

George Coulouris

Swiss Peasant

Ralph Michael

Editor

Katherine Kath

Mme. Lucoville

Eugene Deckers

'La Belle Amie' desk clerk

Olaf Pooley

Swiss Cashier

George Murcell

Zeppelin pilot

Michael Wolf

Zeppelin officer

Gordon Sterne

Corporal

Peter Bowles

Jealous lover at 'La Belle Amie' (uncredited)

William Kendall

M. Marivaux at 'La Belle Amie'

Jeremy Lloyd

English Officer

Roger Delgado

Bureau Member (uncredited)

Maurice Browning

Bureau Member

Clive Cazes

Bureau Member

Milton Reid

Circus victim Leonardi

Frank Thornton

Elevator victim (uncredited)

Nita Lorraine

'La Belle Amie' Girl

Michael Mellinger

Venetian Police Officer (uncredited)

Philip Madoc

German Officer

Kevin Stoney

Blind Man

Lockwood West

Hatter

Rosalind Elliot

Blind hatmaker (Uncredited)

John Abineri

Police Inspector (uncredited)

Anthony Dawes

Assistant Editor (uncredited)

Harry Fielder

Soldier (uncredited)

Michael Gover

Venice Hotel Manager (uncredited)

Peter Graves

Dragomiloff's Butler (uncredited)

John Hallam

Bureau Member (uncredited)

John G. Heller

von Pinck's Aide (uncredited)

Alastair Hunter

Exp!oding Casket Victim (uncredited)