After surviving the brutal stabbing that leaves her two sons dead in 1996, Dallas housewife Darlie Routier urges police to find the intruder she claims is the killer. To her horror, she becomes the No. 1 suspect. In his first interview in nearly 15 years, Darlie's husband, Darin Routier, gives an emotional telling of the events leading up to her arrest while the prosecutors, Greg Davis and Toby Shook, walk through the crime scene as they prepare their case.

The trial of Darlie Routier heats up. Facing one of Texas' top defense lawyers, the prosecution argues that Darlie's actions and demeanor are not that of a grieving mother but of a person capable of murdering her own children. The defense strikes back by questioning the state's theory of motive and the characterization of Darlie. However, when the prosecution presents a video of Darlie having a party at her children's gravesite in the now infamous "silly string video," it seems her fate is sealed. Author Barbara Davis, who was at the original trial, gives a firsthand account.