Forty years ago, a family exploring a cave in Idaho discovered a headless body. The police were stumped. Who was this person? Idaho State University has been working the case for years trying to identify the person, but it wasn’t until they were able to use DNA that they made a breakthrough. Using DNA from genealogy data, they found a match to a family and then traced the family tree to discover a missing relative—an escaped murderer from 1916! STEM solves the problem!