Earle Williams

as Horace Howard

as John Wilbur

as Mary Callahan

as Mr. Black

as Sir Henry Weymouth

as William Dvorak

as Victor Brandt

as The Adventurer

as Major Desmond

as Ramón Martinez

as Sgt. Neil Tempest

as Lt. Breen

as Eddie Manning

as Capt. Robert Kent

as Dr. John Hood

as Anthony Trent

as Leonard Staunton

as Yale Durant

as Captain Swift

as Nathaniel 'Nat' Dunham

as Jules Beaubien / Baptiste

as Ashe Colvin

as Jules Marin / M. Picard

as John Leighton

as James Maddox

as John Ashton / Lord John Hartford

as John Paget / Richard Paget

as Hawtrey Burke

as Sylvester Todd

as James Armitage

as Dr. Hugh Loring

as Dr. Ordway Brandt

as Stephen Page

as Geoffrey Wynne

as Robert Travers

as Stanley Ormsby

as Arsene Lupin

as Christopher Race

as Christopher Race

as Lieutenant Francis Burnham

as Tom Barclay

as John Ballard

as Jack Courtney

as Richard Lawrence - the General's Son

as Sacha

as Brother John Storm

as John Hawley

as John Richardson

as Harry Faulkner

as Henry

as Sherman Avery

as Walter P. Cross - Minister of Foreign Affairs

as Dr. Ferguson

as Lieutenant Bruce

as Walter Brown, a Young Politician

as Cyril - Son of the Earl of Creston

as Lt. Oscar Mulbach, a German Spy

as Lydia's Sweetheart, Paul

as Matthew

as Dr. Howard Baldwin

as Lester - A Swindler

as Dick Livingston

as One of the Beecham Brothers

as John Ruskin

as Jack

as Willie's Room-Mate

as The King's Jester

as Lieutenant Wentworth

as George Pinckney

as Captain Jack Myers

as Lord Francis Towne

as Marcus Brutus