In the summer of 2003, the Houston suburb of Clear Lake, Texas, was devastated when four young residents were viciously slain. The two female victims were just eighteen-years-old, popular and beloved--but when a killer came knocking, it turned out to be someone they knew all too well. . ..Seventeen-year-old Christine Paolilla was an awkward outsider--until the girls befriended her. In this gripping true story, M. William Phelps delves into the heart of a baffling mystery to get to the truth of an act so brutal it could not be understood--until now.