A woman is found strangled after a powerful storm; police focus on a fiancé and a co-worker with a crush until they hear from a flood of women who've had chilling encounters with a stranger; It seemed a predator was stalking the women of Austin.

Diane Marcell walked into her home and found her daughter covered in blood. Then, she felt pure terror. The attacker said she was next. A single drop of blood was the key to finding him, but it took nearly a decade to unlock its secrets.

A 4-year-old girl abducted and raised by her kidnapper spends decades trying to get back home, and she finally accomplishes her goal; as it turns out, that ending was only the beginning.

They were bright young women out for a little fun with their friends. Kenya Monge and Lydia Tillman didn't know each other but they would be forever related, both falling prey to a smooth-talking stranger with a terrifying secret.

When Cathy Torrez never came home after work, her family feared the worst. An intensive search ended after her car was found, with her body in the trunk. Who would commit such a savage crime? It take years to get to the truth.

It was an affluent neighborhood with tree lined streets. Violent crime was unheard of here until that morning when, under the very noses of the cops, a terrible murder occurred. Investigators found a riddle, a deception, a piece of pure evil.

Detective identify multiple suspects after a mother disappears, but they later face scrutiny from the woman's family due to the lack of answers they have provided.

It began with a young mom abducted at gunpoint. Her family and veteran investigators spent desperate days trying to find out where she was but they never could have guessed WHO had her and WHY.

An explosion in a rice field in Colusa County, California kills farm manager Roberto Ayala. But was it an accident or murder?

After a young mom is found dead on the side of a country road, 40 miles from her Knoxville home, investigators scramble to figure out how she ended up there.

When remains are found amid the rubble after a house fire, authorities soon discover the incident was no accident.

What happened that September night when romance turned to danger? Something went terribly wrong and a woman slipped over the edge of a cliff. Did she fall by accident or was she pushed? It would take almost 20 years to find answers.

For investigators, motive can be the hardest thing to find. This crime took place in Florida but detectives didn't discover a motive for murder until they looked into a tropical island thousands of miles away, where a festering grudge was born.

Jack Jessee was a family man who didn't seem to have an enemy in the world, up until the night he was killed. Was someone carrying a secret grudge? The case went cold but a relentless detective was determined to catch Jack's killer

When a young woman is found brutally murdered, investigators start to lose hope when they believe that the case is unsolvable, but the victim's mother is determined to get justice and figure out what happened to her daughter.

A mother, her son and a cousin are kidnapped by terrorists while on vacation; a father turned negotiator tries to end the international hostage drama, but the price of freedom is a huge ransom.

It started with a frightening horror flick from the '80s. Then decades later, it was happening for real. Four people were dead and investigators believed they were chasing a serial killer. Could this old movie hold the key to solving these cases?

Young nursing student Michelle Le had disappeared. Something drew her out to her car. As her loved ones launched a very public effort to find Michelle, investigators began their own methodical search. Was she missing or murdered?

A talented, young art student was murdered. The killer left no fingerprints and no DNA. Police zeroed in on three fellow students and, soon, the dark portrait of a killer began to emerge.

Police believed a pair of double homicides in Nebraska, five years apart, might be connected. Investigators working to solve the crimes feared the killer might strike again. Could they catch him in time?

A successful, seemingly healthy doctor collapses at home and is rushed to the ER, leaving friends and colleagues puzzled.

The Harkey name was famous for pecan harvesting in Texas; the matriarch, with a powerful grip on the family fortune, went missing, so investigators focused on the family; in fact, the plot was more tangled than the branches of a pecan tree.

Lynne Knight was a vibrant young nurse whose love of adventure made her stand out. Then, she was murdered. The savage crime haunted detectives for decades. The killer thought his secret was safe, until new investigators put fresh eyes on the case.

It was supposed to be happy weekend at their cabin. They went on a hike, pausing at a perfect spot for pictures. But something went wrong, and the frigid currents below took a life. Investigators wondered if they also swept away a secret.

Single mom Sarah Goode went missing after a night out with friends; her family was determined to find her; police turned up four possible suspects and two tantalizing clues; the killer left a signature.