Cast
Maxine Audley
Marion Fane
Jack MacGowran
Furber
Alister Williamson
Inspector Pike
Peter van Eyck
Dr. Peter Corrie
Bernard Lee
Dr. Frank Shears
Siegfried Lowitz
Mr. Walters
Jeremy Spenser
Martin Holt
Dieter Borsche
Dr. Miller
Allan Cuthbertson
Da Silva
Anne Heywood
Anna Holt
Hans Nielsen
Immerman
George A. Cooper
Thomas Gabler
Bryan Pringle
Dance Hall MC (uncredited)
John Junkin
Frederick (uncredited)
Ann Sears
Stevenson's secretary
Cecil Parker
Stevenson
Ellen Schwiers
Ella
Miles Malleson
Dr. Miller