Trailer
Cast
Jack Melford
Detective (uncredited)
Herbert Lom
Louis, alias 'Mr. Harvey'
Jack Warner
The Superintendent
Cecil Parker
Claude, alias 'Major Courtney'
Lucy Griffiths
Miss Pringle (uncredited)
Stratford Johns
Security Guard (uncredited)
Sam Kydd
Second Cab Driver (uncredited)
Neil Wilson
Policeman (uncredited)
Harold Goodwin
Parcels Clerk (uncredited)
Peter Sellers
Harry, alias 'Mr. Robinson'
Fred Griffiths
Junk Man (uncredited)
Peter Williams
Detective at Parcels Office (uncredited)
Danny Green
'One-Round', alias 'Mr. Lawson'
Kenneth Connor
Cab Driver (uncredited)
Ewan Roberts
Constable (uncredited)
Alec Guinness
Professor Marcus
Katie Johnson
Mrs. Wilberforce
Edie Martin
Lettice (uncredited)
Arthur Mullard
(uncredited)