Fritzi Brunette
— Laura Parker
James O. Barrows
— Prof. Williams
David Butler
— Tom Parker
Charles Clary
— Martin Sheldon
Frank Coghlan Jr.
— Tommie Parker (as Junior Coghlan)
Helen Lynch
— Ruth Metcliffe
Harmon MacGregor
— George Angier
Cleve Moore
— Skippy North
Pat O'Malley
— Howard Metcliffe
Peter Burke
— 'Count' Lorenz