C. Aubrey Smith
Sir Christopher Pelt
Lionel Atwill
Waterlow
Mary Gordon
Libby, the Housekeeper
John Abbott
Mortimer Cope
Martin Kosleck
Josef
Edgar Barrier
John Usher / Robert Usher
Henry Stephenson
Sir Reginald Meade
Stephanie Bachelor
Sudan Ainger
Cast of Secrets of Scotland Yard