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.

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

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

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

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

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.

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

This documentary series explores the 1960 brutal murders of three women in Starved Rock State Park in LaSalle County, Illinois, and the decades of questions and doubts that have haunted the son of the prosecutor in the case, as the man found guilty seeks to clear his name after sixty years in prison.