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, Director

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