St. Elmo Murray

The Messenger

Mason

Boxall

Night Watchman

Richard Marquess

Lord Bellamont

Inspector Fordham

Scotland Yard Inspector Walters

Spellman

Skeleton

Detective Snell

Wotherspoone

Dr. Petrov

Julius Vardier - Staatssekretär des Innern

Detective Harding

Pietro Morelli

Ahmed Khan

Humphrey