Calificación
Reparto

Edward G. Robinson
Dr. Paul Ehrlich

Ruth Gordon
Mrs. Ehrlich

Otto Kruger
Dr. Emil Von Behring

Donald Crisp
Minister Althoff

Maria Ouspenskaya
Franziska Speyer

Montagu Love
Professor Hartmann

Sig Ruman
Dr. Hans Wolfert

Donald Meek
Mittelmeyer

Henry O'Neill
Dr. Lentz

Albert Bassermann
Dr. Robert Koch

Edward Norris
Dr. Morgenroth

Harry Davenport
Judge

Louis Calhern
Dr. Brockdorf

Louis Jean Heydt
Dr. Kunze

Charles Halton
Sensenbrenner

Irving Bacon
Becker