In just a few hours of conversation in a cell at Nuremberg Prison, Soviet psychiatrist Yevgeny Konstantinovich Krasnushkin, using a unique method, obtains detailed information from Rudolf Höss about the Holocaust and the genocide of the Russian people. The Soviet Union's best psychiatrist not only exposes the leadership and servants of the Third Reich, but also, using Höss as an example, reveals the Nazi psychotype, whose "essence" chills the blood.