William Nigh
Director Paul Malvern
Producer

Noah Beery
Capt. John Holling Astrid Allwyn
Lila Kane Edwin Maxwell
Major Pope Gustav von Seyffertitz
Inspector Von Kessling Ralph Lewis
Prof. Grimson Cornelius Keefe
First Officer Cliff Rogers 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

Wellyn Totman
Screenplay Edgar Wallace
Novel Archie Stout
Director of Photography Oliver Wallace
Original Music Composer