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