In 1996, Bobie and Marilyn Blewer, professional food vendors from Missouri, set up their trailer at the Iowa State Fair. It was - and is - one of the biggest fairs in the country, and had been a regular stop for the Blewers for twenty years. Then, one sunny afternoon, as thousands of people enjoyed the rides and entertainment, word began travelling amongst the other vendors that something had happened to the Blewers. The word was that they had been murdered. What had happened, and who had done it?