Full Cast & Crew
Top Billed Cast
Full Cast
Zeffie Tilbury
Granny Plimpton
Boothe Howard
Capt. Downey
Howard Hickman
Dr. Howard
Jerry Stewart
Edgar Morton
John M. Sullivan
Watson
George 'Gabby' Hayes
Joe, the Watchman
George Cleveland
Simms, the Steward
Raymond Brown
Spy Chief (uncredited)
Gordon De Main
Commander Bryson (uncredited)
Olaf Hytten
Grimson's Aide (uncredited)
George Nash
Waiter (uncredited)
Harry Schultz
Aide (uncredited)
Slim Whitaker
Crewman (uncredited)
Crew
William Nigh
Director
Paul Malvern
Producer
Wellyn Totman
Screenplay
Edgar Wallace
Novel
Archie Stout
Director of Photography
Oliver Wallace
Original Music Composer