From a laboratory in wartime Poland comes a fascinating story of anti-Nazi resistance and scientific ingenuity. Few diseases are more gruesome than typhus. Transmitted by body lice, it afflicts the dispossessedrefugees, soldiers, and ghettoized peoplescausing hallucinations, terrible headaches, boiling fever, and often death. The disease plagued the German army on the Eastern Front and left the Reich desperate for a vaccine. For this they turned to the brilliant and eccentric Polish zoologist Rudolf Weigl. In the 1920s, Weigl had created the first typhus vaccine using a method as bold as it was dangerous for its use of living human subjects. The astonishing success of Weigls techniques attracted the attention and admiration of the worldgiving him cover during the Nazis violent occupation of Lviv.