

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
Henry Houghton
Lead
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
“A staggering achievement of craft and ambition. Robert Tronson's vision lands with breathtaking precision.”
“Every frame feels alive. Ring of Spies is the rare release that takes its audience seriously.”