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