Sly and dry intelligence agent Harry Palmer is tasked with investigating British Intelligence security, and is soon enmeshed in a world of double-dealing, kidnap and murder when he finds a traitor operating at the heart of the secret service.

Cast:Michael Caine, Nigel Green, Guy Doleman, Sue Lloyd, Gordon Jackson, Aubrey Richards,

Genre:Thriller,

country:United Kingdom,

Production:The Rank Organisation, Lowndes Productions Limited, Steven S.A.,