On January 20, 1942, in a grand villa on the shore of Berlin's Lake Wannsee, a conference of Nazi officers produced a paper known as the "Wannsee Protocol," which laid the groundwork for a "final solution to the Jewish Question." This Protocol has always mystified us. How should we understand this calm, business-like discussion of holocaust? And why was the meeting necessary? Hundreds of thousands of Jews had already been shot by squads in Russia...