Cast
Victor Maddern
Milchmann
John Bluthal
Head Waiter / Dr. Crow (voice)
Nora Gordon
Elderly Woman (uncredited)
Barbara Windsor
Agent Daphne Honeybutt
Bernard Cribbins
Agent Harold Crump
Eric Barker
The Chief
Jim Dale
Agent Carstairs
Fred Haggerty
Dr. Crow's Assistant (uncredited)
Kenneth Williams
Agent Desmond Simpkins
Eric Pohlmann
Emile Fauzak, the "Fat Man"
Tutte Lemkow
Man in Marketplace (uncredited)
Renée Houston
Funhouse Madame
Tom Clegg
Funhouse Doorman
Frank Forsyth
Professor Stark
Anthony Baird
Guard
Gertan Klauber
Code Clerk
Charles Hawtrey
Agent Charlie Bind
Judith Furse
Dr. Crow
Norman Mitchell
Native Policeman / Algerian Gent
Richard Wattis
Cobley
Jill Mai Meredith
Cigarette Girl