Released:
1964-03-23

Overview:
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.

Director:
Robert Tronson

Runtime:
1h 30min

Genre:
Drama, Crime, Thriller

• Cast:
• 
  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