In the summer of 1940, Nazi Germany is caught up in a victory frenzy. One after another, the Wehrmacht has occupied Czechoslovakia, Poland, Norway, the Netherlands, Belgium, and France. However, while air victories over England are reported, the first bombs fall on Berlin. The more the war impacts life in the capital, the more Berliners seek distraction. A popular entertainment venue is the Rialto Bar, where swing music is performed every evening. When Hermann Kappe meets a musician during his investigation into the murder of an unknown, apparently foreign young woman, he uncovers a dangerous secret. He must decide: Should he share his findings and thereby expose innocent people to the Gestapo? "It Happened in Berlin," the grand chain novel about Commissioner Hermann Kappe, reflects fictional criminal cases against the backdrop of the B.