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