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