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A routine purchase may lead police to the killer of Laura Ackerson, a young mother whose body parts surface in an alligator-infested creek 1,200 miles away from where she was last seen.

Police find Jenny Webb hanging in an apparent suicide just days from giving birth to her first child. When things don't add up, investigators wonder if an unraveling love triangle and an unexpected pregnancy acted as a motive for murder.

An 8-year-old girl discovers her mother brutally bludgeoned to death in her home after her mom’s shift at a Vegas casino. Police turn to surveillance video hoping to reveal the killers.

A killer stabs devoted father Jeff Wright 193 times and buries him in the backyard of his own home. Investigators examine his background and their quest to find the culprit.

A desperate wife dials 911 to report a robbery after finding her husband, a father of three, shot in bed. Evidence at the scene quickly leads investigators to the killer.

The brutal and public stabbing of a young high school teen shocks the community, and police quickly unravel the crime and motive through threatening voicemails and a long-simmering rivalry.