Credits
Cast
Bernard Lee
Henry Houghton
William Sylvester
Gordon Lonsdale
Margaret Tyzack
Elizabeth Gee
David Kossoff
Peter Kroger
Nancy Nevinson
Helen Kroger
Thorley Walters
Cmdr. Winters
Gillian Lewis
Marjorie Shaw
Newton Blick
P.O. Meadows
Philip Latham
Captain Ray
Cyril Chamberlain
Anderson
Justine Lord
Christina
Patrick Barr
Captain Warner
Derek Francis
Chief Supt. Croft
Hector Ross
Supt. Woods
Paul Eddington
Johnnie (uncredited)
Richard Marner
Colonel Monat (uncredited)
Geoffrey Palmer
Police Officer (uncredited)
Bryan Pringle
Surveillance Man (uncredited)
Andre Mikhelson
Russian Embassy Official (uncredited)
Garry Marsh
First Member at Lords (uncredited)
Basil Dignam
Second Member at Lords (uncredited)
Brian Nissen
Portland Official (uncredited)
Edwin Apps
Blake (uncredited)
Fred Griffiths
News Vendor (uncredited)
Anita West
Tilly (uncredited)
Art
Norman G. Arnold
Art Direction
Camera
Jack Lowin
Camera Operator
Arthur Lavis
Director of Photography
Costume & Make-Up
Daphne Vollmer
Hairdresser
Ernest Gasser
Makeup Artist
Crew
Cecil Mason
Sound Recordist
Directing
Derek Cracknell
Assistant Director
Robert Tronson
Director
Editing
Thelma Connell
Editor
Production
Paul Sheridan
Casting
Leslie Gilliat
Producer
Writing
Frank Launder
Writer
Peter Barnes
Writer