Missing 411

Send us Fan MailEvery year, over one thousand people disappear while visiting US state and national parks. Many are never seen again. These incidences are largely attributed to unpreparedness, leading to death by exposure, starvation, dehydration, accident, and animal attack. But could something more sinister be at play in our own backyards? This week we take a look at six missing person's cases and discuss their relevance to a controversial organization known as Missing 411.   Other mysteries from this week: The FBI's Werewolf Registry, Chunk vs. Sloth, and robot grandma caves.