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