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.

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.

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.

After Erin Corwin told her husband she was scouting hiking trails in Joshua Tree National Park, she suddenly vanished -- police quickly uncovered a steamy love triangle and a mystery with a deep pool of potential suspects.

He was a drummer who never missed a beat, then vanished; his family and the police were determined to work together; it was a race against the clock to find him.

Amber Dubois disappeared in the San Diego area, and the search turned up nothing. Then, a year later, Chelsea King disappeared in a neighboring town. Investigators were determined to find out if the two cases were connected. Will these girls be found together and alive?

When a college student vanishes, investigators launch a massive manhunt and quickly discover she is not the kidnapper's first victim; police are inundated with leads before an anonymous tipster divulges a secret that helps crack the case.

She was a wealthy, beloved socialite in the suburbs of New York City and an unlikely target for such a brutal murder. Police immediately zeroed in on the most likely suspect but solving this crime wouldn’t be easy or quick.

It was a custody battle, then baby Savanna was gone. The mystery of her whereabouts spanned two decades. Solving it took investigators nearly 10,000 miles around the world, driven by a determined dad trying to learn what happened to his daughter.

Michelle Mockbee met her husband at the warehouse where they both worked; it was also where she met an untimely death; security footage led police to a suspect, but when it appeared justice had been served, a scandal turned the case upside down.

Angila Wilder was a busy mom, working to make her dream of becoming a nurse come true, then she was murdered; at first, investigators thought it looked like an open-and-shut case, but it would take an elaborate sting to uncover the truth.

Private First Class Karlyn Ramirez had a job she loved and a baby she adored. Then, she was shot dead in her home. Her killer thought he'd covered his tracks, but investigators uncovered a plot so devious, it defied imagination.

After following the case for more than fifteen years, Dateline delivers a comprehensive report with rarely seen interrogation video, new insight from prosecutors, and surprising details from the other woman, Amber Frey, who helped uncover the truth.

Nick popped the question and Kristy said yes; they were busy planning their future when she found him dead in the bedroom; police questioned spurned lovers and office enemies before a tip from Nick's brother helped reveal the true killer.

Rosie and Yazeed Essa seemed to have an ideal life, two beautiful children, no financial worries and a loving extended family; a fatal fender bender shattered it all; investigators discovered her marriage was full of secrets.

Randy Baker battled addiction as a young man, then found his calling as a counselor later in life. When Randy was found dead, investigators wondered if someone from his past put an end to his future, or if trouble was closer to home.

Chiquita Tate was growing her reputation as a tenacious defense attorney but her promising career was cut short when she was murdered. Police had a challenge. At work, she dealt with tough clients, and at home, she was going through a rough time.

Police probe the shooting of the father and his infant son on the streets of Miami -- while the child survives, the father does not. English

Cassy Farrington had two beautiful kids, a doting boyfriend and an exciting new job. Then she was found dead in her bathtub. Cassy's parents were determined to solve the mystery, stopping at nothing until they found justice.

Young mom Brigida Uto loved running and chasing her toddler around, and when her health suddenly failed, doctors had to unravel a medical mystery to save her life; then, the FBI joined the confounding case and uncovered a sinister plot.