
90 minutes
3/23/1964
The film is based on the actual events of the Portland Spy Ring trial in the U.K. A disgruntled Navy Clerk is transferred to a secret research establishment and is subsequently black-mailed/paid by Czech intelligence to procure secrets for them. He seduces the secretary who controls the most secret documents, and they enjoy the fruits of their treachery until the British authorities begin to close in on them.

Bernard Lee
as Henry Houghton

William Sylvester
as Gordon Lonsdale

Margaret Tyzack
as Elizabeth Gee

David Kossoff
as Peter Kroger

Nancy Nevinson
as Helen Kroger

Thorley Walters
as Cmdr. Winters
Gillian Lewis
as Marjorie Shaw
Newton Blick
as P.O. Meadows

Philip Latham
as Captain Ray

Cyril Chamberlain
as Anderson
Justine Lord
as Christina

Patrick Barr
as Captain Warner

Derek Francis
as Chief Supt. Croft
Hector Ross
as Supt. Woods

Paul Eddington
as Johnnie (uncredited)

Richard Marner
as Colonel Monat (uncredited)

Geoffrey Palmer
as Police Officer (uncredited)

Bryan Pringle
as Surveillance Man (uncredited)
Andre Mikhelson
as Russian Embassy Official (uncredited)

Garry Marsh
as First Member at Lords (uncredited)

Basil Dignam
as Second Member at Lords (uncredited)

Brian Nissen
as Portland Official (uncredited)
Edwin Apps
as Blake (uncredited)

Fred Griffiths
as News Vendor (uncredited)
Anita West
as Tilly (uncredited)