Ring of Spies is a 1964 British spy film directed by Robert Tronson and starring Bernard Lee, William Sylvester and Margaret Tyzack. It was written by Peter Barnes and Frank Launder based on the real-life case of the Portland spy ring, whose activities prompted "Reds under the bed" scare stories in the British popular press in the early 1960s.

Ring of Treason (1964)
Directed by Robert Tronson
Description by Wikipedia
Movie Info
Tags
British, Portland Spy Ring
Attributes
Narrative Location: London, set in Dorset
Subject: Cold War spy
Subject: Cold War spy
Alternate Titles
003 contro Intelligence Service
IT
BM15必死の潜行
JP
Casuslar Çemberi
TR
Circulo de espias
AR, CL, CO, MX, VE
Den röde agenten
SE
Fabrique d'espions
BE, FR
Kémek gyűrűjében
HU
Lov za listino prekletih
SI
Reţea de spioni
RO
Reţeaua trădării
RO
Ring of Spies
AU, IE, GB
Ring of Treason
CA, US
Senca izdaje
SI
Spionnen fabriek
BE, NL
Spionringen
DK
To 13o kleidi
GR
Vakoojien piiri
FI