For decades, rumors and conspiracy theories swirled after nine people disappeared in the Ural mountains of the Soviet Union in 1959. But just a few years ago, the case was solved – even though many don’t accept the explanation. Journalist and author Doug Preston guides us through the second half of the story. 

MORE: The mountain where the people disappeared has since been renamed Dyatlov Pass and is today a popular hiking destination. If you’re into this case and want to learn more – check out Doug’s new book The Lost Tomb, which will be released Dec 5.