Self - Host
Narrator/Host
Dr. Ballard
Narrator (voice)
Narrator
Narrator
Narrator
Narrator
Narrator (voice)
Narrator
Narrator (voice)
Narrator / Self
Narrator
Narrator
Narrator
Narrator
Narrator
Lord Awliscombe
Invisible Jones (voice)
Himself - Host
Dr. Walton
Edward Whitaker
Narrator (voice)
Narrator (voice)
Narrator
Edward Whitaker
Edward Whitaker
Sherlock Holmes
Sir Wilfred
Dr. John Watson
Dr. Watson
Andrew Marcus
E.B. Hungerford
Professor Plocostomos
Geoffrey Keeble
Tom Jamison
Machiavel
Nigel Evans
Himself
Carl Lawton
Father Christopher
Sir Wilfred
Gilbert Anthony Paige
Sir Cyril Landau
Tibbett
Sir Denis Eton-Hogg
Dr. Stark
Vincent Reyblack
Dr. John Morgan
David Mathews
Dr. George Waggner
Major 'Yogi' Crossley
Captain Good R.N.
Boudreau
Horatio Black
Imperious Leader (voice)
Dr. Gheria
Doctor Watson
Shawcross
Derek Longbow
Dudley Jerico
Colonel Trent
Pvt. Duff (scenes deleted)
Sir Percy
Rochester
Lieutenant Commander Medley, R.N.
Guard Subaltern (segment "Lord Mountdrago") (uncredited)
Young Jacob Marley
Capt. David Sutherland
Hon. John Bristow
Phillips
Hugh Hurcombe
Extra (uncredited)
Edgar Linton
