On December 10, 2003, police receive a mysterious 911 call at a home in the tony Walnut Estates in Mansfield, Texas. Police are dispatched to investigate and when they enter the home they encounter a horrific scene: the bloodied bodies of homeowners Rick and Suzy Wamsley. The couple was highly regarded around the neighborhood and thought to have the perfect family life so detectives are left with a big question mark: Who and why would anyone want to kill the Wamsleys? When detectives launch an investigation to find out, the myth of the Wamsleys' perfect life begins to unravel. It turns out underneath the polished exterior, there are deep, dark secrets.