Recruited by the Russians during their days at Cambridge, three young Englishmen rise to become high-ranked MI5 agents until their exposure in 1949.
Length 90 minutes
Derek Jacobi | Bernard Archard | David Markham | Oliver Ford Davies | Arthur Lowe | Michael Culver | Patrick Holt | Anthony Bate | Barrie Cookson | Richard Hampton | Robin Hooper | Richard Hurndall | Anthony Langdon | Hugh Morton | Ingrid Hafner