When a pediatric dentist is found dead, police uncovers a complex plot and their suspect leads investigators on an international manhunt; the lead detective speaks out for the first time;

After the death of 44-year-old mother Stacy Feldman in her Denver home is ruled as “undetermined,” friends and family join forces to piece together what happened. Insiders close to the case speak out about the seven-year battle for justice. Keith Morrison reports.

When a Colorado mother vanishes without a trace, the detective investigating her disappearance discovers a connection to a previous assault; for the first time on television, the survivor of that attack recounts her terrifying ordeal.

New details on the infamous murder of Laci Peterson, including more on the appeal of her convicted killer.

When a young pregnant mother goes missing in Virginia, her family embarks on a frantic search, but the case eventually goes cold; years later, investigators speak with a woman who tells a harrowing story and may hold the key to solving the case.

The investigation into the mysterious disappearance of a Canadian man sparks an international manhunt for an elusive killer with multiple false identities.

Las Vegas detectives investigate the fatal shooting of a U.S. Air Force Airman.

After trumpet player Scott Sessions fails to show up for a scheduled gig, his family learns his body was abandoned in the remote Colorado Rockies; as the investigation narrows in on two suspects, a second murder catches police by surprise.

A series of mysterious events haunt 16-year-old Cassie Jo Stoddart while housesitting, and days later, she's found stabbed to death; police retrace her last day and uncover a stockpile of evidence pointing right to her killers.

After more than 20 years, the real killer of Idaho teen Angie Dodge is caught; a chilling twist in the story of Chris Tapp who had been wrongfully convicted in the case. Keith Morrison reports.

New details and interviews about the murder of a professional cyclist.

In Southern California, initial signs point to an accidental fall down a staircase as the cause of Susann Sills's death in 2016. Does the evidence disprove her husband's story?

A group of women help bring down a smooth-talking serial predator turned killer who lured young women with promises of fame and fortune.

In Humble, Texas, a frantic 911 caller, 16-year-old Keri Murphy, reports hearing her mother's screams after an intruder entered their home. When first responders arrive, they find Mary Ann Murphy dead after receiving more than 70 stab wounds. What happened on that dark summer night?

After a 2011 Halloween party at a country club in Dyersburg, Tennessee, Karen Swift, a wife and mother of four, vanishes. Nearly a decade later, a private investigator claims to uncover chilling new clues that turn the town upside down.

Latest developments and new interviews in the high-profile murder trial of Lyle and Erik Menendez; a scripted show reignites public interest in the case.

After Gary "Big Daddy" Farris mysteriously disappears, his family discovers his remains on their sprawling 10-acre estate. An investigation reveals a family deeply divided by jealousy and greed, but did one of them kill Big Daddy?

An elderly socialite is reported missing from her stately New York City brownstone. When Sante Kimes and her son Kenny are arrested, an investigation reveals decades of crime, deception, and murder that captivated the nation.

Lori and Chad Daybell were both convicted in separate trials for the gruesome killings of two of Lori’s children in 2019. Now, Lori breaks her silence in a shocking new interview from prison.

In the early morning hours of November 13, 2022, four University of Idaho students were killed in an off-campus rental house on King Road in Moscow, Idaho. See never-before-reported evidence, including video, photographic, and digital materials that investigators say track accused killer Bryan Kohberger’s movements.