In 2017, Jordan Hazel becomes the prime suspect in the brutal triple murder of his wife Keara, son Kayden, and daughter Jaylynn.

In 1995, a beloved mother is found raped and murdered in the accounting office where she works. The bloody body of her young daughter is nearby. But as police photograph the scene, they get the shock of their careers.

When an Idaho woman dies of a suspected drug overdose in 1999, the case seems open and shut until her 3-year-old daughter gives a chilling statement to police. Now, that daughter wants to know why it took the police so long to believe her.

When five people vanish in 1993, cops have zero leads; seven years later, someone connected to the case starts to talk.

In 2011, Mother's Day in Tustin, California, looks a little different this year for high school freshman Tony Gana. His mother, Annamaria Gana, is battling stage 2 breast cancer. She says she's fine, but Tony can tell the medicine and the chemo is taking its toll. Officer Todd Hylton is called to the scene of an alleged shooting. Just moments earlier, the caller told dispatch that his mom shot him

One night in 1993, in Manhattan Beach, California, an officer is shot and killed during a routine traffic stop. The only witness is a young boy who is too terrified to tell police what he saw.

After a savage beating that nearly kills a young mother, Omaha investigators learn that she's not the only victim. They launch a relentless search for the killer and quickly realize their most crucial clue might die with their victim.

In 1980, in Radford, Virginia, college freshman Gina Hall goes out dancing and never returns. Police follow her trail to a mysterious lake house, but where she goes from there is a mystery that has endured for 40 years.

In 1997, in quaint Anne Arundel County, Maryland, a detective inherits a stack of cold cases. As he begins to unravel each one, he uncovers a shocking and gruesome common thread.

When the perpetrator of a brutal shooting claims no randomness to his murders, a prosecutor must untangle fact from fiction.

In 2007 in Bethany, Oklahoma, a young pregnant woman goes missing. Police desperately try to retrace her last steps, and unearth more than just the secrets she harbored.

In 2016, when a beloved young mother vanishes, her family - desperate for answers - makes a deal with the devil.

In 2011, as the manhunt for a dangerous cop killer rages across Athens, Ga., police get a call from the man they are looking for; he's not alone and has hostages, and police fear he wants to go down in a blaze of glory.

In 2019, when a beloved father vanishes, his home appears spotless, but there’s something odd about the flower garden.

In 2008, a real estate developer finds his glamorous wife Kay Wenal slashed from ear to ear in her Georgia home; with few clues in the case, investigators quickly learn that all is not what it seems in her picture-perfect life. [also shown as S3:E12]

In 2001, in Cortez, Colo., the violent murder of a gay Navajo teenager means two spirits die with him.

After a Valentine's dance in 1974, 17-year-old Carla Walker is kidnapped by a man with a gun. For 45 years, the case goes unsolved, and no one knows that the person responsible is living uncomfortably close, hiding in plain sight.

In 1996, in Tulsa, Oklahoma, a young mother is found dead on the side of a rural stretch of highway in an apparent hit-and-run accident. But as the family grieves, the façade begins to crack, and soon the truth seeps out.

In 1992, when Jenn Drury learns about her father's brutal murder, her first thought is that the cult has something to do with it.

For six months in 2014, a serial killer preys upon innocent victims in Los Angeles.

In 1988, a man is released from jail after a judge deems his murder confession false. For 25 years, a family's hope for justice fades, as the killer walks the streets. But one tenacious detective refuses to let this cold case go.

In 1995, a desperate mother in Conroe, Texas, learns the hard way that sometimes Satan takes the form of a family friend.