Roger Balfour (archive footage)
Uncle Willie's Butler (uncredited)
Governor of Virginia
Clerk (uncredited)
Monsieur Dubois
L.F. (uncredited)
Chester B. Morlick - Thomas' Lawyer (uncredited)
Yeoman Usher (uncredited)
Man at Bronson's Fox Hunt
Passenger on Yacht
Mr. Gato (uncredited)
Art Dealer
Courtier
Dr. Francesco Antommarchi (uncredited)
Judge at Harvey's Trial
General Bryce
Chief Officer of Ship Inquiry Board (uncredited)
Captain
Eric Ledyard
Territorial Consul Gilbert
Colonel Loder
Col. Wallis
Ellis Holden
Duke of Marlborough
J. P. Ridley
Toastmaster (uncredited)
Man at April's Party (uncredited)
Mr. B. Abercrombie
General
Everett (uncredited)
James Reynolds
Ralph Winters
Mr. Pride
Boat Captain
Albert Devonshire
Sir Basil Wynard
Colonel Braithwaite
The Governor Sir Ellery Bronson
General Horace G. Stevens
Henry Belmont
The Inspector
C.M. Chisholm
Explorer (uncredited)
Capt. Arthur Cope
Lakely
Dr. A. Peterson
Sir James Montgomery (Uncredited)
Mr. Galatalin
Conference Chairman
Richard Clare, Moonyeen's Father
Arnold
Mr. Albright (uncredited)
Doctor (uncredited)
Mr. Adams
Dr. Tubbs
Sir William Gresham
Arthur - Trent's Junior Partner
Captain
Howard Crane
Major General Visiting Hospital (uncredited)
Mac Moore
Mr. Hamilton
Marques de Castelar
Enright
Gilbert Crayle
Bathurst
Valmorin, the Prosecutor
Sir John Petrie
Sir George Mannering
General in India
Yacht Captain
Richard Danforth (episode 2)
The Real Lord Stonehill
John Moreland
The Earl of Rutfield
Mr. Post
Thomas L. Burke
Robert Blair
Roger Balfour
Boris Abelard
Ben Grimes
Mr. Muir
Contarini
J. van Dyke Parker
Lord Charles Chetwyn
Dr. Meyer Isaacson
Dr. Herbert