Michael Caine character Maj. John Tarrant
Donald Pleasence character Cedric Harper
Delphine Seyrig character Ceil Burrows
Clive Revill character Alf Chestermann
John Vernon character McKee
Joss Ackland character Chief Supt. Wray
Janet Suzman character Alex Tarrant
Catherine Schell character Lady Melissa Julyan
Joseph O'Conor character Sir Edward Julyan
Denis Quilley character Bateson
Derek Newark character Monitoring Policeman
Edward Hardwicke character Mike McCarthy
Maureen Pryor character Jane Harper
Joyce Carey character Miss Monley
Preston Lockwood character Ilkeston
Molly Urquhart character Margaret
David Daker character MI5 Man
Hermione Baddeley character Hetty
Patrick Barr character Gen. St. John
Yves Afonso character Jacques (uncredited)
Del Baker character Shadow (uncredited)
Murray Brown character Doctor (uncredited)
Les Conrad character M15 Man (uncredited)
George Lane Cooper character Pincus (uncredited)
Brenda Cowling character Secretary (uncredited)
Robert Dorning character Jeweller (uncredited)
Roy Everson character M15 Man (uncredited)
Nancy Gabrielle character Manageress (uncredited)
Jill Goldston character Commuter (uncredited)
Charlie Gray character Tourist (uncredited)
Peter Halliday character Customs Officer (uncredited)
