Police retrace the final steps of single mother Mary Stetson after her torso washes up on the shore of New Hampshire's Piscataquog River.

The apparent drowning of a woman on the morning of her 50th birthday is investigated.

The disappearance of a young woman after a night of partying at a Louisiana roadhouse is investigated.

The show takes a look into the disappearance of a young woman after a night of partying at a Louisiana roadhouse.

The show takes a look into the disappearance of a young woman after a night of partying at a Louisiana roadhouse.

When 19-year-old Kathy Bonney, model daughter, fails to return home, concerned father Tom Bonney turns to police. That same day, her body is pulled from Virginia’s Great Dismal Swamp. Turns out, Kathy wasn’t as angelic as her family was led to believe.

When two women are discovered in the depths of Georgia's Flint River, detectives wonder if a serial killer is afoot. But when they connect the two victims, investigators follow their lead to the discovery of two more corpses, and a whole slew of betrayal.

Alabama teen Edith McLeroy rebels against her conservative upbringing marrying the leader of a biker crew, cruising the highways as queen of the pack. But when her body is found in Louisiana, a mystery is sparked that will end up lasting 32 years.

In Noel, Missouri, a bank is robbed of $71,000 and the President, Dan Short is nowhere to be found. Could Short have robbed his own bank? Five days later, a body is found in the swampy shallows of the Great Lake o'the Cherokees.

In Texas, a wife files a missing person's report after her husband Bobby doesn't come home one evening.

When a dependable 16-year-old girl misses her curfew, her family knows something is wrong. This episode recounts the murder of Carol Hutto through the eyes of Detective Tom Knapp.