In the mid-1960s, the two noble prostitutes Gertrude "Gina" Echsner and Johanna Wiesnet were cruelly killed in Munich. The perpetrator or perpetrators were never caught. But modern forensic technology now makes it possible to reopen one of the most famous cases in Bavarian criminal history. Rather by chance, patrol officers found the murder weapon, a dagger, in the Amish sled of former underworld king Robert "Roy" Esslinger, which could bring clarification after more than four decades. The case ends up on the desk of Ivo Batic and Franz Leitmayr on orders from above – more precisely: from Detective Oberrat Wellisch.
During their investigations, the two chief inspectors immerse themselves in the long-faded Munich red-light district of yesteryear: Robert "Roy" Esslinger was in the 1960sa well-regarded half-world size in the train station environment. Thanks to his insidious charm, the cynic, who was worth millions, always understood how to cooperate with the city leaders. Even Munich's former police chief Dr. Landgräber remembers it "very well". What makes Batic and Leitmayr's investigations more difficult is the cooperation of their assigned inspector Sirsch, a grumpy, older officer who can't even use the computer. This circumstance offers Batic and Leitmayr the best opportunity to mourn the loss of their dear ex-colleague, the technically highly talented and above all industrious Carlo Menzinger.
Because Batic and Leitmayr now have to do the tedious detail work like combing through dusty folders all by themselves. However, amazing things come to light.