John Emery

as Georges Peydal

as Norman Kingsley

as Lawrence Price (1 episode)

as The Pawnbroker (1 episode)

as Paul Donaldson

as Dr. Hubbell Eliot

as Wheeler

as Edward Winter

as Cody Clark

as Kerwin Drake (1 episode)

as Abel Dennis (1 episode)

as Rinaldi aka 'The Great Rinaldi'

as Harold (1 episode), as Mr. Stewart (uncredited) (1 episode)

as Professor

as Governor Elden

as Clyde Gorman

as Dr. Karl Eckstrom

as Vincent

as Jean, Duke d'Alencon, cousin of Charles

as John Newberry