In celebration of our 50th episode, we bring you our longest, most detailed episode yet on one of the most mysterious incidents in history. In January of 1959, 9 hikers mysteriously perished on the frigid slopes of Ural Mountains in Russia. To this day, no one knows what killed them. In part 1, we discuss the hikers, their journey, their disappearance, the search and discovery of their bodies, and the strange circumstances of their deaths.

Warning: This episode contains detailed discussions of autopsies.