On February 2, 1959, nine college students hiked up the icy slopes of the Ural Mountains in the heart of Russia but never made it out alive. Investigators have never been able to give a definitive answer behind who - or what - caused the bizarre crime scene. Fifty-five years later, American explorer Mike Libecki reinvestigates the mystery - known as The Dyatlov Pass incident - but what he uncovers is truly horrifying. Follow Mike as he traces the clues and gathers compelling evidence that suggests the students' deaths could be the work of a creature thought only to exist in folklore.