International Besteller: The 21 was an instant bestseller in Europe upon its publication in German in February 2018. Major media event: The brutal killing of 21 Coptic Christians by ISIS in Libya was an unforgettable moment that still arouses interest. Publication date is on the four-year anniversary of the event. Center of a continuing global conflict: The turmoil in the Middle East and the issues of Islamic extremism, refugees, and economic migration that the book address continue to capture headlines regularly. Sheds light on a fascinating subculture: Coptic Christianity is an intriguing but little-understood religion in the center of the Middle Eastern conflict.