After claiming to survive the brutal stabbing that left her two sons dead, Dallas housewife Darlie Routier urged police to find the alleged intruder. In a shocking twist, she became the No. 1 suspect and was sentenced to death. Now, nearly 23 years since the case first captured the nation’s attention, a two-hour “20/20” documentary explores the details of the crime, trial and Darlie’s current defense team’s retrial strategy for her as she sits on death row.