TLC's latest documentary is decidedly darker than Honey Boo Boo. Their upcoming "Half-Ton Killer" follows the story of Mayra Rosales, the 1,100-pound woman at the center of a devastating family tragedy. Mayra confessed to accidentally crushing her 2-year-old nephew Eliseo. But investigators determined that she was too physically limited to have fallen on the boy, and they believe he died from head trauma.

In a shocking twist, Mayra changed her story, claiming she was taking the fall for her sister Jaime, who beat Eliseo to death. Jaime is currently serving 15 years behind bars after pleading guilty to causing injury to a child.

Jane spoke to Mayra's attorney about the case and about a shocking development in his client's life.