演职人员
导演
查尔斯·拉蒙特
Joseph Harris
Robert Warwick
Kenneth 'Ken' Harris
Charles Starrett
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
Lucille Coates
Doris Lloyd
Sam Anderson
Ralph Brooks
Sheriff Graves
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