Cast
Geoffrey Toone
Mr. Tobin
Oliver Johnston
Lord Chief Justice
Basil Henson
Mr. Arditti
Max Faulkner
Radio Officer Andrews (uncredited)
Donald Pleasence
Dr. Hawley Harvey Crippen
Coral Browne
Belle Crippen
Samantha Eggar
Ethel Le Neve
James Robertson Justice
Captain McKenzie
John Arnatt
Chief Inspector Dew
Hamilton Dyce
Dr. Rogers
Totti Truman Taylor
Miss Curnow
Donald Wolfit
R.D. Muir (as Sir Donald Wolfit)
Olga Lindo
Mrs. Clara Arditti
Edward Underdown
The Governor
Paul Carpenter
Bruce Martin
Guy Standeven
Ships Steward (uncredited)