as Mr. Black
as Sgt. Neil Tempest
as John Ballard
as Sacha
as Tom Barclay
as William Dvorak
as Sir Henry Weymouth
as Capt. Robert Kent
as Lieutenant Wentworth
as Jules Marin / M. Picard
as Dr. Hugh Loring
as Geoffrey Wynne
as Victor Brandt
as Horace Howard
as John Paget / Richard Paget
as Arsene Lupin
as Anthony Trent
as Eddie Manning
as The Adventurer
as One of the Beecham Brothers
as Brother John Storm
as John Leighton
as Robert Travers
as Lester - A Swindler
as Stanley Ormsby
as Major Desmond
as Leonard Staunton
as Sherman Avery
as Henry
as Dr. Howard Baldwin
as Cyril - Son of the Earl of Creston
as Dr. Ordway Brandt
as Mary Callahan
as Ashe Colvin
as James Armitage
as The King's Jester
as John Hawley
as Stephen Page
as Captain Swift
as Hawtrey Burke
as Lieutenant Francis Burnham
as Lt. Oscar Mulbach, a German Spy
