After Regina Hartwell threatened to turn him in to the cops, drug dealer Justin Thomas stabbed her in the throat so hard he cut into her lung, causing her to drown in her own blood. 

The discovery of a burnt body triggers an investigation that unearths a scandalous tale of lust, lies, and love triangles.

Jessie James Cummings ran a polygamous household, and believed no one would ever dare defy him. Two mysterious disappearances prompt police involvement, though, and dark secrets are revealed.

Jessie and Sherry Cummings moved to peaceful Atoka County in 1987 with their young daughter. They are remembered as reclusive. The whole extended family was not well off, and transients, many of them working in manual labor.

Regina Hartwell's friend, Jeremy Barnes remembers Regina helping him out when he was too proud to ask for money. Unfortunately, toward the end, his friend had "more toxic people around her than good people."

Joe James Sawyer, attorney for Justin Thomas, says he became aware that his client was also suspected in at least one prior murder.

Kim LeBlanc was genuinely remorseful and cooperative with investigators, a Travis County district attorney says. But it's hard to know what she was thinking around the time of Regina's murder. An old classmate remembers Kim as being manipulative.

Delilah Saunders' sister, Loretta, was strangled and discarded in a sack by Blake Leggette and Victoria Henneberry over about $500; she turned her horror into strength, however.

A pair of outcasts looking for a home. A mysterious disappearance. A toxic relationship and a shocking act of violence.

An heiress with a tragic past and a former cheerleader who liked to party ... they would become ensnared in a love triangle that was destined to end in fiery murder.

Firefighters responded to a vehicle fire in the middle of a field in Travis County Texas at 2 a.m. Once they beat the fire down and let it cool, they discovered a body in the backseat.

RCMP Corporal says it's ironic Loretta was writing her thesis on missing and murdered indigenous women, and was murdered herself "basically over nothing." He'll never forget the senseless murder or how intense the investigation was.