Claude Rains
Dr. Jack Griffin
Gloria Stuart
Flora Cranley
William Harrigan
Dr. Arthur Kemp
Forrester Harvey
Herbert Hall
Holmes Herbert
Chief of Police
E. E. Clive
Constable Jaffers
Dudley Digges
Chief Detective
Harry Stubbs
Inspector Bird
Donald Stuart
Inspector Lane
Robert Adair
Detective Thompson (uncredited)
Edgar Barrier
Radio Announcer (uncredited)
Ted Billings
Villager Playing Darts (uncredited)
Walter Brennan
Bicycle Owner (uncredited)
Robert Brower
Farmer (uncredited)
Mae Bruce
Mary Purdy (uncredited)
Rita Carlyle
Townswoman at Pub (uncredited)
John Carradine
Informer Suggesting Ink (uncredited)