The death of a group of tourists in the Urals, led by Igor Dyatlov, has left many questions and mysteries. The investigation attributed the tragedy to a blizzard and an avalanche, but this conclusion is still the subject of fierce debate. The author conducts the first honest investigation, revealing the contradictions and inconsistencies scattered in the criminal case, referring to the facts suppressed by the investigation, and comes to a shocking conclusion. A detailed examination of the circumstances of the death of tourists is based on archival documents, photographs from the films of the participants of the hike, testimonies from contemporaries and evidence that previously turned a blind eye. The book tells not only about the last campaign of the Dyatlovites, but also about their lives, the signs of the time and the characters of the people who lived then.