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