"A true story about Louis Pasteur, who revolutionized medicine by proving that much disease is caused by microbes, that sanitation is paramount and that at least some diseases can be cured by vaccinations."
Paul Muni
as Louis Pasteur
Josephine Hutchinson
as Marie Pasteur
Anita Louise
as Annette Pasteur
Donald Woods
as Dr. Jean Martel
Fritz Leiber
as Dr. Charbonnet
Henry O'Neill
as Dr. Emile Roux
Porter Hall
as Dr. Rossignol
Raymond Brown
as Dr. Radisse
Akim Tamiroff
as Dr. Zaranoff
Halliwell Hobbes
as Dr. Lister
Frank Reicher
as Dr. Pfeiffer
Dickie Moore
as Joseph Meister
Ruth Robinson
as Mrs. Meister
Walter Kingsford
as Napoleon III
Iphigenie Castiglioni
as Empress Eugénie
Herbert Corthell
as Louis Adolphe Thiers, 1st President, Republic of France
William Dieterle
Director
Pierre Collings
Screenplay
Sheridan Gibney
Hal B. Wallis
Executive Producer
Ralph Dawson
Editor
Robert M. Haas
Art Direction
Milo Anderson
Costume Design
Jack L. Warner
Tony Gaudio
Director of Photography
Irving Rapper
Assistant Director
Charles Lang
Sound
Frank Shaw
Heinz Roemheld
Original Music Composer
Leo F. Forbstein
Music Director
Story