When Heather Barnett happily opened her front door to a caller one morning in November 2002, little did she know that she was about to come face to face with her killer. Tragically, her mutilated body was discovered by her son and daughter on their return home from school that day. The police quickly ascertained that the murder was premeditated and meticulously planned to the last macabre detail; the killer had not left a single DNA clue--even the...