Book excerpt: The remarkable story of Josef Hartinger, the German prosecutor who risked everything to bring to justice the first killers of the Holocaust and whose efforts would play a key role in the Nuremberg tribunal. At 9 am on April 13, 1933, deputy prosecutor Josef Hartinger received a telephone call summoning him to the newly established concentration camp of Dachau. Four prisoners had been shot. The SS guards claimed that the men had been trying to escape. But what Hartinger found when he arrived convinced him that something was terribly wrong. All four victims were Jews. Before Germany was engulfed by Nazi dictatorship, it was a constitutional republic. And just before Dachau became a site of Nazi genocide, it was a legal state detention center for political prisoners. In 1933, that began to change. In Hitler’s First Victims, Timothy W. Ryback evokes a society on the brink—one in which civil liberties are sacrificed to national security, in which citizens increasingly turn a blind eye to injustice, in which the bedrock of judicial accountability chillingly dissolves into the martial caprice of the Third Reich. This is an astonishing portrait of Hitler’s first moments in power, and the true story of one man’s race to expose the Nazis as murderers on the eve of the Holocaust.