Dr. Charles Langley-Beard (4 episodes)

Wintour

Examining Judge

Examining Judge (1 episode)

Magistrate

(1 episode)

DS Bull (1 episode)

(1 episode)

(1 episode)

Colonel Harcourt Badger Owen

Francis Urcombe

Naso (4 episodes)

Josiah Wedgwood (1 episode)

Francis Urcombe

Von Brondorff (1 episode)

Grand Duke Nicholas (1 episode)

Koestler

Professor Dyne (1 episode)

Mr. Frazer (1 episode)

Jack - Frazer Senior (1 episode)

Lanning Koestler (1 episode)

Rev. Howard Whithead

Arnold Bingley (1 episode)

Klintzch (2 episodes)

(1 episode)

Maitre Lacan (33 episodes)

Piso (1 episode)

Councillor Percival

Stanley Preston

Nesbitt (1 episode)

Major General Atkins

Major General Atkins (1 episode)

Magistrate (1 episode)

Mr. Parry (1 episode)

Alfred Truelove (1 episode)

John Anthony

Councillor Percival (1 episode)

Cardinal Runan (1 episode)

Forbes-Wainwright (1 episode)

Insp. Morgan

Bishop of Winchester

Rear Admiral

Bracewell - U.S. Delegate

Col. Fowler

Det. Chief Superintendent Robins (1 episode)

Tom Stone

Coyannis (1 episode)

Frank (1 episode)

Trifonov

Trifonov (2 episodes)

Prince Galitzin (1 episode)

Trifonov

Hooper Moulsworth

Chief Superintendent Gault

Professor Stephens

General Leighton

Mr. Tulkinghorn (11 episodes)

Boat Owner Spokesman (uncredited)

Prosecutor at Esterhazy Trial

The Mayor

Doctor

Willis Croft

Hooper Moulsworth (1 episode)

(1 episode)

Deputy Morgan

Engineer Officer

Lt. Col. Turbojet