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