Summary:

Paul Ehrlich (Edward G. Robinson) works as a hospital dermatologist, but his two passions are his family and his independent research into dyes and stains. When he abandons his call-duty to attend a lecture by Robert Koch, hospital officials have all they need to dismiss the annoying Jew. Koch, however, engages him to develop dyes to enhance the visibility of the newly discovered tubercle bacillus.

Ehrlich's health is broken by the research, but one success leads to another. With Emil von Behring (Otto Kruger), he works on a serum to save children with diphtheria. Moved by the anxiety of the mothers, he refuses to maintain untreated controls. His superiors are furious, but the state is grateful and he is awarded his own institute.

Ehrlich turns his attention to finding a "magic bullet" to treat syphilis, but his relationship with von Behring founders. Arsenic derivatives are endlessly modified until success is reached in 1910 with agent 606. A few deaths in treated subjects prompt Ehrlich's enemies to arrange a formal inquiry, but he is completely exonerated and reconciled with von Behring.

View full annotation