Snapped Bonus: Investigating Monica Melissa Patterson (Season 25, Episode 21)

Prosecutor Joseph Orendain recalls the investigation of Monica Melissa Patterson, a former South Texas hospice administrator who was found guilty of capital murder for killing 96-year-old Martin Knell to gain access to his money and estate. While Knell was first believed to have died of natural causes, investigators later learned he had been fatally suffocated.