Before and during World War II, the Japanese army conducted horrifying scientific experiments upon live human beings, but were granted immunity from the US Army's war crimes investigation in return for the results of their experiments. This title details the activities and the subsequent cover-up.

Factories of Death details the activities of the Japanese army scientists that conducted numerous horrifying experiments upon live human beings. It investigates who from the upper echelons of the Japanese military and political establishments knew of the experiments, also 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 after the war. 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.