Cast
Robert Warwick
Joseph Harris
Edward Van Sloan
Professor Bostwick
James Bush
Byron Coates / John Meseraux
Eddie Tamblyn
Bill Smart
Robert McKenzie
Sheriff Graves, Sheriff
Doris Lloyd
Lucille Coates
Jane Keckley
Bostwick's Housekeeper
Helen Jerome Eddy
Miss Lottie Case
John Davidson
Professor Brand
George Morrell
Deputy Ab Barber
Broderick O'Farrell
Dr. Howell
Charles Starrett
Kenneth 'Ken' Harris
Marion Shilling
Jean Coates
Julian Madison
Charlie Penlon
Herbert Bunston
College Professor
Eric Mayne
Professor at Service (Uncredited)