Dateline

Doctors and law enforcement are called in to try to solve a horrific crime.

A 19-year-old's disappearance evolves into a months long homicide investigation.

Lester Holt spends two nights locked up and embedded inside Louisiana State Penitentiary.

Pages from John Hinckley Jr.'s diary, which he began writing after his assassination attempt.

When a wife calls 911 to report her husband has been shot on a country road in Texas, officers rush to the scene.

When a college student is found dead after a party, his mother gets the case in front of a jury.

Pamela Smart's husband is found murdered; police investigate and discover that Smart is keeping a big secret.

A man claims his wife died by suicide; a suspicious house fire 24 years later raises doubts.

A woman finds out that her boyfriend might have killed a college football player out of revenge.

A mother of two who vanishes during a storm turns out to be a victim of something sinister.

Rod Covlin, a New York man who is found guilty of murdering his wife for her $5.3 million fortune.

Questioning family members about the death of a 59-year-old father.

The mystery of a murdered co-worker is considered solved until a stunning disclosure years later.

A 21-year-old college senior is shot and killed in a public park just months before her graduation.

Two decades after a Jacksonville, Florida woman goes missing, her son solves the mystery that haunted his childhood.

A successful businesswoman and mother of three is found shot in her office.

Investigators discover a new tool that may finally help unlock a murderer's identity.

Lester Holt investigates the government's response to the coronavirus pandemic and asks if better preparation could have saved lives.

A dancer is murdered in her home; detectives find the case more complicated than previously thought.

A mother in Pennsylvania disappears after co-workers see her leaving for lunch.

Shortly after police leave the scene of a house party, they are called back for a shooting.

When a young woman fails to show up to work, her mother rushes to her home to try to find her.

Two young girls in Washington are snatched in broad daylight while riding their bikes.

When Ohio mother Heather Bogle goes missing, a detective identifies multiple suspects.