Dateline

When a mother of four dies unexpectedly, her death is attributed to natural causes.

When a model and up-and-coming YouTube celebrity turns up dead, police question her husband.

An unexpected source turns the investigation into a woman's murder upside down.

A community comes together to search for a young woman who goes missing from a Halloween party.

An investigation of a woman found murdered in Fort Worth, Texas.

A couple's anniversary celebration ends in murder during what appears to have been a home invasion.

The mysterious death of a young mother in Ohio and the ensuing investigation that spans years and multiple states.

A young mother disappears after leaving her infant in the care of her local pastor and his wife.

When a young Army medic goes missing, police get help from an unorthodox private investigator.

O.J. Simpson's infamous Bronco car chase and subsequent standoff with the LAPD SWAT team.

A woman's death is initially ruled a suicide, but when a new investigation begins, police begin to suspect murder.

A small-business owner and his bride are murdered shortly after their wedding.

When a complicated Texas love triangle ends in murder, a pink gun leads to an arrest, until new evidence prompts investigators to rethink the case.

Former DEA agent Andrew Hogan details his search for Mexican drug lord Joaquín "El Chapo" Guzmán.

A Tennessee resident is murdered in her bedroom; investigators have little evidence and struggle to find answers.

The disappearance of a young Oregon woman leads to an intense manhunt.

An alleged abuser and stalker moves on to worse behavior with the help of his new girlfriend.

Rapper Meek Mill interview; exploring controversies surrounding the criminal justice system.

When a young woman is found dead in a field on the outskirts of Green Bay, Wis., a fitness tracker helps detectives solve the mystery.

A recent law school graduate in Georgia with a promising future disappears without a trace.

A father in Hawaii tackles setback after setback in his fight for justice for his murdered daughter.

A woman's ex kills six people, allegedly targeting individuals connected to their divorce.

A popular high school student is found murdered in her bed; two students help police solve the case.

A former firefighter is found dead in his garage; a neighbor's security camera may provide answers.

A case considered closed by North Dakota detectives is reopened when an informant comes forward.