该片细腻且深刻地描写出各类神秘的双面间谍的故事，书中复杂的斗智活动、两难的道德处境、暧昧的善恶定义、纠结的人际关系，情节引人入胜，内容富含人生哲理。
Richard Burton
Alec Leamas
Claire Bloom
Nancy 'Nan' Perry
Oskar Werner
Fiedler
Sam Wanamaker
Peters
Jiří Voskovec
Comrade Karden - Defense Attorney
Rupert Davies
George Smiley
Cyril Cusack
Control
Peter van Eyck
Hans-Dieter Mundt
Michael Hordern
Ashe
Robert Hardy
Dick Carlton
Bernard Lee
Patmore
Beatrix Lehmann
Tribunal President
Esmond Knight
Old Judge
Tom Stern
CIA Agent
