Dennis Hoey

as Head Constable

as Arthur Conan Doyle (1 episode)

as Burford

as Joab

as Major Harper

as Mr. Pitcher

as Mr. Smith

as Capt. Munsey

as Sir William Glasdale

as Mr. Burnside

as Tiny Wilson

as Minister of War Grubitch

as Williams 'Bill', Matilda's Butler

as Hoff

as Roger Elwood

as Steven Loring

as Tim Hager

as Cole Gregory

as Sir Edward

as Inspector Pierce

as Commissioner

as Inspector Lestrade

as Jonathan Selby

as Sultan Kamar Al-Kir / Prince Hadji

as Inspector Lestrade