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

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.

In May 2002, a couple goes missing in Ocean City, Maryland. It's almost as if they vanished into thin air until a random, late-night burglary leads police to discover a tale of deception, brutality and savagery, the likes of which they have never seen.

In 2011, a husband returns home to find his wife dead on the living room floor. He tells first responders she committed suicide, but it was murder. Police zero in on the husband and what unfolds is one of the most outrageous tales in recent history.

When neighbors find a young teacher axed to death on Friday the 13th, a sleepy suburb fears a psychopath is loose; the bloody crime scene leads police to a most unlikely suspect, unfolding a story people still have to see to believe 40 years later.

In York, Pennsylvania, 1969, race riots claim the lives of an African-American mother and a young, white police officer. Their deaths are largely forgotten until 30 years later when their cold cases are reopened, revealing the city's dark past.

After a fire chief's wife's burned body is discovered, an autopsy reveals she died from a gunshot wound to the head, and the arson investigation turns into a hunt for her killer.

When an 11-year-old Arizona girl vanishes while waiting for an ice cream truck, it's clear she's been abducted. The search for her leads to a trail of suspects, making it the largest missing child investigation in Arizona history.

The morning of his anniversary, Mike Williams goes duck hunting. When he fails to return home that afternoon, an all-out search commences. But it's only the beginning of a sordid mystery that will take close to 20 years to solve.

In the summer of 1980, a popular teen goes for a run around her hometown in Maine and vanishes. Days later, her savagely beaten body is found. But what happened remains a mystery for years, until her mother intervenes and forces police to reexamine the case

When three women from three different decades meet their death or go missing under mysterious circumstances, authorities are forced to examine the one thing they had in common: they all fell in love with the same man.

In Philadelphia, police make a horrific discovery 18 months after a woman goes missing. The police pursue the woman's killer, but he always manages to stay one step ahead of the law.

In the summer of 2000, bags full of body parts start appearing all over the San Francisco Bay Area. Investigators follow the trail of grisly clues to a secret cult carrying out a sinister scheme.

Gallaudet University is the premier college for the deaf in the United States, but this haven of higher learning is turned upside down after two students are murdered in their dormitory rooms.

On a Mississippi back road, a 19-year-old woman is set on fire and left to burn alive. Her last words lead detectives down a road of dead ends and the case goes cold until a special agent taps into her location data and finds a suspect.

In 1969, a woman is found murdered in Los Angeles, but her identity is a mystery. For decades, police investigate, hoping to put a name to the face and find her killer. The one lead that comes up over and over leads them to Charles Manson.