Joseph Harris
Robert Warwick
Kenneth 'Ken' Harris
Charles Starrett
Sam Anderson
Ralph Brooks
Sheriff
Robert McKenzie
Professor Brand
John Davidson
College Professor
Herbert Bunston
Deputy Ab Barber
George Morrell
Dr. Howell
Broderick O'Farrell
Bostwick's Housekeeper
Jane Keckley
Professor at Service (Uncredited)
Eric Mayne
Jean Coates
Marion Shilling
Miss Lottie Case
Helen Jerome Eddy
Professor Bostwick
Edward Van Sloan
Byron Coates / John Meseraux
James Bush
Bill Smart
Eddie Tamblyn
Charlie Penlon
Julian Madison
Sheriff Graves
Lucille Coates
Doris Lloyd
Director
Charles Lamont
Screenplay
Charles Belden
Adaptation
Novel
Clifford Orr
Producer
George R. Batcheller
Editor
Roland D. Reed
Art Direction
Edward C. Jewell
Assistant Director
Melville Shyer
Sound Engineer
L.E. Clark
Director of Photography
M.A. Andersen
Production Supervisor
Lon Young
Music Director
Abe Meyer
Presenter