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