The Master Blackmailer
Đạo diễn Peter Hammond
Diễn viên
Gwen Ffrangcon Davies
The dowager
Colin Jeavons
Inspector Lestrade
David Mallinson
Colonel Dorking
Alan Rothwell
Tronson, The Butler
Norma West
Lady Diana Swinstead
Rosalie Williams
Mrs Hudson
Sophie Thompson
Agatha
Jimmy Hibbert
Hobbs, The Painter
Serena Gordon
Lady Eva Blackwell
Nickolas Grace
Bertrand
Hans Meyer
Hebworth (Alias Veitch)
Howard Gaye
Lewis, Dorking's Batman
Jeremy Brett
Sherlock Holmes
Edward Hardwicke
Dr. John Watson
Robert Hardy
Charles Augustus Milverton