一名英国特工的儿子被绑架并扣留，索要钻石赎金。特工发现他甚至不能指望那些他认为站在他一边的人来帮助他，所以他决定自己追查绑匪。
Michael Caine
Maj. John Tarrant
Donald Pleasence
Cedric Harper
Delphine Seyrig
Ceil Burrows
Clive Revill
Alf Chestermann
John Vernon
McKee
Joss Ackland
Chief Supt. Wray
Janet Suzman
Alex Tarrant
Catherine Schell
Lady Melissa Julyan
Joseph O'Conor
Sir Edward Julyan
Denis Quilley
Bateson
Derek Newark
Monitoring Policeman
Edward Hardwicke
Mike McCarthy
Maureen Pryor
Jane Harper
Joyce Carey
Miss Monley
