In this weeks investigation Hot On The Case travels to Boise Idaho in 2011, where affairs and cheating quietly unraveled two married couples, Ashlee and Emmett Corrigan, and Kandi and Rob Hall. What began as secret relationships quickly spiraled into betrayal, jealousy, and mounting tension that no one could control. By the end of the affair, one of these four would be dead, and another would be behind bars for murder.