Mild gusts whipped around the yellow police tape surrounding a well-tended home in Clear Lake, Texas. Inside were four viciously slain young bodies: Rachael Koloroutis, Tiffany Rowell, Marcus Precella, and Adelbert Sanchez. At high school, Rachael and Tiffany had been beautiful, intelligent, and beloved. But their kindness had made them targets -- because the killer who came knocking that lazy afternoon turned out to be someone they knew all too well...