Calificación
Reparto

Bernard Lee
Henry Houghton

William Sylvester
Gordon Lonsdale

Margaret Tyzack
Elizabeth Gee

David Kossoff
Peter Kroger

Nancy Nevinson
Helen Kroger

Thorley Walters
Cmdr. Winters

Gillian Lewis
Marjorie Shaw

Newton Blick
P.O. Meadows

Philip Latham
Captain Ray

Cyril Chamberlain
Anderson

Justine Lord
Christina

Patrick Barr
Captain Warner

Derek Francis
Chief Supt. Croft

Hector Ross
Supt. Woods

Paul Eddington
Johnnie (uncredited)

Richard Marner
Colonel Monat (uncredited)