In 1938, it became clear to Hitler’s entourage: Europe was on the verge of a big war. A loose network of German officers, diplomats, politicians and civilians does everything to prevent bloodshed and undermine the Third Reich from within: informing the Allies about troop movements, supplying disinformation to the Nazi leadership, planning a plot to kill Adolf Hitler and seize power. Prominent members of the cell, nicknamed the "Black Chapel" by the Gestapo, include Colonel Hans Oster, theologian Dietrich Bonhoeffer and his son-in-law Hans von Dohnanyi, a staff member of the Abwehr, Germany's military intelligence agency, which culminates in the failed Operation Valkyrie on July 20, 1944. The explosion of the bomb, which was carried into the meeting in a briefcase, barely injures Hitler - which means inevitable death for all the conspirators. The fascinating and action-packed book “The Black Chapel” is not only a vivid portrait of the era, but also a story about people who are ready to risk their lives in order to turn away from the crazy path their country has taken.