On January 20, 1942, fifteen senior German government officials attended a short meeting in Berlin to discuss the deportation and murder of the Jews of Nazi-occupied Europe. Despite lasting only a few hours, the Wannsee Conference is today understood as a signal episode in the history of the Holocaust, exemplifying the labor division and burueaucratization that made the "Final Solution" possible. Yet while the conference itself has been exhaustively researched, many of its attendees remain relatively obscure. Combining accessible prose with scholarly rigor, The Participants...