Ernest Torrence
— Dr. Ballou
Roland Young
— Lord Montague
Dorothy Sebastian
— Lady Efra
Natalie Moorhead
— Lady Vi
Sydney Jarvis
— The Butler
Polly Moran
— Polly, Maid
George Cooper
— Frey, Lord Montague's Orderly
Sôjin Kamiyama
— The Mystic
Claude Fleming
— Sir James Rumsey
Clarence Geldart
— Inspector Lewis
John Miljan
— Major Mallory
Richard Tucker
— Colonel Davidson
John Loder
— Captain Dorchester
Philip Strange
— Lieutenant Williams
John Roche
— Lieutenant Savor
Lionel Belmore
— Major Endicott
Gerald Barry
— Captain Bradley
Richard Travers
— Major McDougal
Ellinor Vanderveer
— Guest at First Seance
Boris Karloff
— Abdul Mohammed Bey - the Hindu Lawyer (uncredited)