Detective Chief Inspector Jon Sattler has one final investigation standing in the way of his retirement. At first, the case is almost too straightforward... but then he crosses paths with a mysterious man who seems to know more about Sattler than is even possible. A horrific crime has the city of Hamburg in shock: wine dealer Thomas Heyer has been found dead in his opulent suburban villa, brutally stabbed dozens of times. Had Heyer been close to his killer, perhaps even been expecting the visit? The open bottle of wine and two glasses found near his body would seem to suggest so... Or maybe it was a crime of vengeance, committed by one of the many trusting investors driven into ruin several years ago through Heyer's dubious financial schemes? Detective Chief Inspector Jon Sattler is determined to leave no stone unturned in his investigation. And even though his designated successor, Dr. Katharina van Mellendorp, is already breathing down his neck, pushing him to wrap his last case up quickly, Sattler is convinced that there is far more to this story than meets the eye...