In 1938, Hitler's entourage understands: Europe is on the verge of a big war. A fragmented network of German officers, diplomats, politicians and civilians is doing everything to prevent bloodshed and undermine the Third Reich from the inside: it informs the Allies about troop movements, supplies disinformation to the Nazi leadership, plans a conspiracy 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. The culmination is the unsuccessful Operation Valkyrie on July 20, 1944. The explosion of the bomb, which was carried to the meeting in the briefcase, barely wounds Hitler - which means imminent death for all the conspirators. The fascinating and action-packed book "Black Chapel" is not only a vivid portrait of the era, but also a story about people who are ready to risk their lives to turn away from the crazy path their country has set foot on.