Gilbert Green

as Dr. Johannes Lepsius

as Vic Stout (1 episode)

as Dr. Hatrwig

as Al Landon

as First Doctor (1 episode)

as Frank Tallman

as Crippen (1 episode)

as Silvan (1 episode), as Talib (1 episode), as Joseph Lombard (1 episode)

as Paulitz

as Louis Antoine

as Gaspare de Gregorio

as Congressman Hand

as Sir David (1 episode)

as Dr. Lewis

as Mr. Cargyll

as Newspaperman

as S.S. Major (1 episode)

as Jensen

as Kimmel (1 episode)

as General Hans Stofle (1 episode)

as Harvey Misbach

as Judge Virgil Winner (1 episode)

as Kazinczy (1 episode)

as Jewish Father

as Max Rubini (1 episode)