In 1998, a gifted Philadelphia graduate student is found murdered in her bed, triggering a hunt for her killer.

In 1971 and '72, Washington DC is terrorized by a cunning killer who abducts and murders six young African American girls. Police and the community are outraged by the serial killings that target young children in their own neighborhoods.

When a widower and father of three is found murdered outside his Long Island home, police have reason to look into shady business dealings as a possible motive. Then, a tip leads to three unlikely suspects, exposing dark family secrets.

After doting mother Cheryl Coker vanishes from Riverside, OH, numerous searches turn up nothing; as police take a closer look at the case, they uncover some disturbing information.

In the summer of 2004, Lindsay Cutshall and Jason Allen are working as councilors at an outdoor Christian adventure camp in Northern California They decide to head down the coast for a weekend getaway, but when they fail to return to camp Sunday evening, the camp staff become very concerned. A search ensues and the police discover the couples' bodies at Fish Head Beach, in Jenner, California. As police begin investigating the double homicide, they discover the killer has left no clues and little evidence. Over the succeeding days, weeks, and years, Sonoma County Detectives investigate a group of suspects as they relentlessly search for the killer.

Kelsey Berreth, a young mother, and pilot was last heard from on the morning of Thanksgiving 2018. Her fiancé is worried she may have harmed herself after a stressful year. But when police discover blood in an unusual place, they begin to unravel a bizarre story of love, jealousy, and a murder that goes far beyond what anyone in law enforcement could have imagined.

A quiet rural town is rocked when two middle-school girls go on a hike and are later found murdered. But when police discover one of the girls may have recorded her killer with her cellphone, the race is on to find the mysterious man.

On a snowy night in January 1980, college student Helene Pruszynski disappears after reaching her final bus stop. When her body turns up in a snowy field, police launch a long and frustrating investigation that pushes family and detectives to the brink of hopelessness. Their hope is revived when they discover that cutting-edge forensic genealogy may hold the key to finding Helene's murderer.

When Ashley Ellerin is found murdered in her Hollywood bungalow, police zero in on the Hollywood heartthrob she was supposed to have a date with the night she was killed. The case takes a shocking turn as detectives realize Ashley is not the only victim, and discover they are on the hunt for a serial killer. The assailant's victim count grows until one woman manages to fight back so fiercely that he leaves behind critical blood evidence. But will they be able to finally catch him?

In the summer of 2003, the Iron Range of northern Minnesota is a peaceful community where parents let their kids play outside on their own without a second thought. But when five-year-old LeeAnna Warner vanishes without a trace, investigators do a deep dive into the quaint community and realize that some of the familiar faces in the neighborhood may be hiding some disturbing secrets that may never fully be uncovered.

In the spring of 2001, former child actor and Baretta star Robert Blake just married Bonny Lee Bakely, the mother of his new baby girl. The couple are out to dinner in Los Angeles when Bakely is murdered in the passenger seat of the couple's car, execution style. Blake seems devastated, but as police investigate, they uncover a tale of a troubled marriage of convenience and a fight for custody that may have led to one of Hollywood's most infamous murders.

When a woman is found dead in her historic house on Horseshoe Lake, police chase her killer to the water where he drowns. But when the body is recovered, people are shocked to realize this story started 25 years earlier when two other family members were found murdered by the same man.

19-year-old Stacey Stites is found raped and murdered in a small Texas town. After a year-long investigation police match DNA from the scene to a man named Rodney Reed. Reed is convicted and sentenced to death, but in the coming years as Reed proclaims his innocence, certain evidence comes to light that might prove he's telling the truth.

[Quiet Night, Deadly Night] On December 10, 2003, police respond to a mysterious 911 call at a home in the Walnut Estates in Mansfield, Texas. When authorities enter the home they discover the bloodied bodies of homeowners Rick and Suzy Wamsley. The key to finding the killer is within one of the victim's grasp.

Two days before the new millennium, the Freeman family trailer is burned to the ground. The couple's remains are found with bullets to the head, but their teenage daughter and her friend are missing.

A savage predator goes on a homicidal rampage with a savage triple murder along with an abduction of two young siblings from their home in the middle of the night. The children quickly decide they will do whatever is necessary to survive.

A mother's bond to her daughter is put to the ultimate test when one of them shoots a man dead.

During an armed robbery, a father of three is fatally shot, but for 23 years, another family questions if the wrong man is behind bars.

Five young people disappeared over a span of four years in the rural area of Lewis-Clark Valley, along the Idaho-Washington border. Investigators search for links to the mysterious cases.

In 1984, a slew of brutal hammer attacks leaves a Colorado community in fear. It takes nearly 40 years before a serial killer is brought to justice.

The murder of James Byrd, Jr. throws his family into turmoil as law enforcement investigates one of the most gruesome hate crimes in U.S. history.

One family's American dream goes up in flames. As they try to rebuild what's left, they vow never to extinguish their search for justice.

In January 2020, a Mennonite woman goes missing from her small religious community. They find her body, but forensic evidence leads them to a dead end, stymieing law enforcement. Detectives get creative in an effort to find their suspect.

When a young woman goes missing, a rookie police officer's intuition leads to an intense investigation, as they race against the clock to find her.

A 19-year-old coed leaves her apartment and never returns. When her body is found in a desert river basin, police and internet sleuths alike wonder if she was a victim of an alleged killer known as The Zombie Hunter.