Edna Murphy
— Corinne Grant
Charley Chase
— Glen Harper
Hayford Hobbs
— Donald Bartlett
William Gillespie
— John Dryden
Glenn Tryon
— Reporter
Colin Kenny
— Stanley Fleming
Eddie Baker
— Jack Reynolds (as Ed Baker)
Frank Lackteen
— Malay George
Sam Lufkin
— Sam Comstock
William F. Moran
— Dr. Philip Markham
Scott Pembroke
— Dr. Harrison
Ray Myers
— Clinton Hodge
Fred McPherson
— Professor Comstock
Fong Wong
— Oracle of the Sands