Fabian Risk decides to take a short break from business to spend time with his family during difficult times. But he is still haunted by the mysterious suicide of his colleague, Hugo Elvin, the inspector is sure that his friend was conducting an investigation that affected the interests of the highest ranks of the police.Meanwhile, Helsingborg is shaken by a wave of violent attacks on refugee quarters, and it seems that the whole country is infected with the virus of intolerance. Public sentiments frighten with their volatility, and Fabian is forced to return to the service and begin the investigation.But the further the case progresses, the more obvious it becomes that the real danger lies elsewhere. Fabian Risk's main vendetta with a criminal whose methods are striking in their sophistication and whose motives are unknown is approaching.