When a rash of murders depletes their number, a billionaire's employees are brought together at an Englishman's estate.
Dr. Ballou
Lord Montague
Lady Efra
Lady Vi
The Butler
Polly, Maid
Frey, Lord Montague's Orderly
The Mystic
Sir James Rumsey
Inspector Lewis
Major Mallory
Colonel Davidson
Captain Dorchester
Lieutenant Williams
Lieutenant Savor
Major Endicott
Captain Bradley
Major McDougal
Guest at First Seance
Abdul Mohammed Bey - the Hindu Lawyer (uncredited)
