Cast
Robert Beatty
Maj. Sam Seagram
Patric Doonan
Brian Jackson
Stanley Maxted
Prof. Adams
Phyllis Calvert
Lydia Heathley
Walter Fitzgerald
Sir Charles Craddock
Muriel Pavlow
Caroline Cartier
Marjorie Fielding
Michael's Mother
Cyril Chamberlain
Inspector Carter
Marianne Stone
Maisie
Johnnie Schofield
Jim Barnes (uncredited)
James Donald
Michael Heathley
Hartley Power
General Adams (uncredited)
Philip Ray
Sentry (uncredited)
Maurice Denham
Prof. Carrington
Herbert Lomas
George Jackson
Hal Osmond
Agent Lawson
Noel Willman
Dr. Dennis Bord
Herbert Lom
Dr. Alex Leon