The article discusses the features, motives of behavior, types of murderers who have increased social danger. It’s not just about who did it, but exactly why? In the end, if we figure out why, and add to it how, then we will understand who. This is a psychological chess game without pieces. The relevance of the review lies in the fact that the method of psychological profiling is often used in the investigation of crimes in Russia, as well as abroad. Profiling demonstrates good efficiency. The “picture” of the crime often makes it possible to understand what type of person is capable of committing this act. Along with this, various typological types of criminal personalities who allow illegal behavior aimed at harming the life and health of citizens are also considered. Thus, when using profiling as a method of exposing a criminal, it implies a whole mechanism for narrowing the circle of suspects in committing crimes, as well as drawing up a kind of psychological portrait of the latter.