The Mark of a Killer

This intense documentary series details true stories of neighbors gone bad, from heinous fraud schemes to senseless acts of violent retribution.

In this true-crime documentary, a cult expert and filmmaker infiltrate a polygamist sect to expose a self-proclaimed prophet and bring him to justice.

Crime journalist Raphael Rowe goes behind the bars of some of the world’s most notorious and toughest prisons. Immersing himself in maximum security facilities around the world to live as a prisoner, he encounters the inmates locked up for their crimes and meets the men and women on the right side of law tasked with keeping the criminals behind bars.

Death row inmates convicted of capital murder give a firsthand account of their crimes in this documentary series.

Police missteps and a media circus derailed the JonBenét Ramsey murder case. This definitive docuseries chronicles the decades-long quest for justice.

Through bodycam footage, texts and interviews with loved ones, this documentary investigates the horrifying murder of four University of Idaho students.

Serial killer Jeffrey Dahmer confesses to his gruesome crimes in unguarded interviews, offering an unsettling view into a disturbed mind.

An overgrown field and a stretch of highway connect a series of grisly murders spanning several decades as grieving families search for answers.

From crippling payday loans to cars that cheat emissions tests, this investigative series exposes brazen acts of corporate greed and corruption.

What happened to Mica Miller? This documentary series retraces her promising life, toxic marriage and the mysterious circumstances of her death.

Interviews with friends, family and Sally McNeil herself chart a bodybuilding couple’s rocky marriage — and its shocking end in a Valentine's Day murder.

Dateline NBC, or simply Dateline, is a weekly American television newsmagazine series. It was previously the network's flagship newsmagazine, but now focuses mainly on true crime stories with only occasional editions that focus on other topics.