In Manchuria, before and during World War II, the Japanese army conducted numerous horrifying scientific experiments upon live human beings, including those relating to bacteriological and chemical warfare. After the war, the Japanese scientists who had been engaged in these activities were granted immunity from the US Army's investigation for war crimes in return for the results of their experiments. Factories of Death details the activities of these scientists and the subsequent cover-up. It investigates sensitive topics like who knew of the experiments in the upper echelons of the Japanese military and political establishments, the question of whether or not Allied POWs were subjected to such tests, and the nature of the deal that was brokered with US authorities. Sheldon Harris has based his work on extensive field research in China and previously unavailable records from the US governmental agencies and the KGB. This new edition has been completely updated, and contains an entirely new chapter detailing the numerous revelations that have surfaced since the book's initial publication in 1994.