Cast
Doctor Finchley
Rumford
Admiral Winfield
Commander Wayne
Hotel ClerkGeorge Hayden Dolly 
Flagship Radio Officer, not listed in credits
Police Chief at Morgue, not listed in creditsSailor Bringing Radiogram, not listed in credits 
Quartermaster, not listed in creditsDirigible Lt. C.O. Bell, not listed in credits Radio Announcer, voice acting, not listed in credits 
Agent Hargrave, not listed in credits
Capt. Riddell - Naval Hospital Doctor, not listed in creditsContinental Airport Radio Operator, not listed in credits 
Hargraves' Radio Operator, not listed in credits
Dirigible Officer, not listed in creditsSunnyvale Radio Officer, not listed in credits 
Dr. Delby - Prison Hospital Doctor, not listed in creditsTaxi Driver, not listed in credits 
Sunnyvale Radio Operator, not listed in credits
Collins - Police Chemist, not listed in creditsFlagship Admiral, not listed in credits 
Hans -, a Henchman, not listed in creditsSailor, not listed in credits Morgue Attendant, not listed in credits 
Prescott - Dirigible Radioman, not listed in creditsZeppelin Navigator, not listed in credits Dirigible Officer, not listed in credits 
Congressman Courtney Rice, not listed in creditsNaval Hospital Nurse, not listed in creditsа Hotel Bellhop, not listed in credits 
