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