TV Guide Investigation Discovery Monday

When 28-year-old mother Samantha McNorton vanishes without a trace in Wise County, Texas, police hit a dead end, until Ranger Jim Holland steps in.

A couple finds their dream home in rural Arkansas, but a gated road dispute quickly escalates into a feud with angry neighbors.

When 21-year-old Diamond Bynum and her 2-year-old nephew, King, vanish from their Gary, Ind., home, police first think they simply wandered off.

When 28-year-old mother Samantha McNorton vanishes without a trace in Wise County, Texas, police hit a dead end, until Ranger Jim Holland steps in.

A 911 call comes in from the quiet luxury neighborhood of Ponte Vedra. A husband reports the kidnapping of his wife. The FBI races to locate the mom alive.

The body of a 74-year-old woman is found bludgeoned to death, the gruesome discovery sends shockwaves across the community, suspicion and paranoia take control.

When 12-year-old Rosie Davenport is found murdered, the circumstances of her death like the unsolved murder of 13-year-old Malissa Thomas one year earlier.

After a young mother disappeared, her sister turned to social media for help and got thousands of volunteers for over two months until the body was found.

When college student Cayley Mandadi dies with strange bruises, her family refuses to give up their quest to prove her death was not an accident.

Jeanne and Stephen Trantel have the dream life, but when Stephen loses his job, their relationship splinters and Jeanne suspects he is hiding a terrible secret.

The discovery of secret writings from beyond the grave helps Sarah Ripoli to finally understand the shocking truth of what went on between her mom and dad.

Barbra and Michael Mastromarino's life seems perfect, but when a shocking discovery unearths a gruesome secret, and the family is forced to face the truth.

Elizabeth Chambers unravels the marriage that Kate Ranta finds herself trapped in, until the night he nearly kills three generations of Kate's family.

Chambers speaks with Kelly Sutliff to unpack how Kelly's whirlwind romance with her ex-husband went from a fairytale to a nightmare that still haunts her.

Elizabeth joins the Harris family in their fight for justice against the doctor who uses power, privilege and drugs to control their youngest daughter, Sarah.

A web of lies is uncovered when a family investigates what happened to entrepreneur, Chris Smith, who disappeared during his travels around the world in 2010.

A double murder involving the family of a federal judge leads the FBI, U.S. Marshals and Chicago P.D., on a massive investigation to follow the killer's trail.

After moving to a new city following her parents' divorce, a 14-year-old girl is dissatisfied with her new surroundings, and she starts running away from home.

In 1992, store clerks across the Midwest are being shot dead in the middle of the day, and it's not long before police realize it's the work of one killer.

A predator sneaks into 3 little girls' tent at summer camp, and a camp counselor uncovers what will become one of the most notorious crimes in Oklahoma history.

A predator sneaks into 3 little girls' tent at summer camp, and a camp counselor uncovers what will become one of the most notorious crimes in Oklahoma history.

Retired drama teacher Kathy Gillcrist discovers that the police want her father for one of the most infamous mass murders in Maryland state history.

Religious leader Gene Spriggs creates a movement in Tennessee with teenagers and disenchanted hippies called the Twelve Tribes.

Questions and accusations fly after savvy entrepreneur and mother of five, 52-year-old Dee Warner, vanishes from her rural Michigan home.

Religious leader Gene Spriggs creates a movement in Tennessee with teenagers and disenchanted hippies called the Twelve Tribes.

Questions and accusations fly after savvy entrepreneur and mother of five, 52-year-old Dee Warner, vanishes from her rural Michigan home.

Retired drama teacher Kathy Gillcrist discovers that the police want her father for one of the most infamous mass murders in Maryland state history.

After Navy officer Allen R. Schindler is beaten to death in Japan in 1992, for being gay, his mother goes on a desperate search to learn who murdered her son.