Leslie Banks
Dr. Manetta
Lilli Palmer
June Lansdowne
Cathleen Nesbitt
Ann Cody
Gina Malo
Glenda Baker
David Horne
Edward Havelock
Romilly Lunge
Dick Martin
Richard Bird
Inspector Cornelius 'Andy' Sneed
J.H. Roberts
Luis Silva
Aubrey Mallalieu
Lord Charles Francis Selford
Harry Hutchinson
Bevan Cody
Phil Ray
Tom Cawler
Ross Landon
John Selford
Raymond Mander
P.C. in Sneed's Office (Uncredited)
Charles Paton
Handwriting Expert (Uncredited)
George Street
Chief Commissioner (Uncredited)