In this episode, new host and collaborator for the show, Dr. David Sigmon, tells the horrifying tale of the Japanese surgeon Dr. Shiro Ishii and Japan's infamous Unit 731. While his acts were terrible, they were not only tolerated but encouraged at the time. And both the US and USSR failed to properly prosecute him or his unit. It is difficult to hear some of these details, and the podcast may be too graphic for some, so listener beware. But it is important to remember history, even some of the darker sides of the history of surgery.