Killer Britain with Dermot Murnaghan

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.

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

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

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

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

A six-part, true crime docuseries about a mysterious murder of Ken Rex McElro that took place in the ‘80s with at least 60 witnesses present, all of whom deny seeing anything.

Revisit the shocking 1999 murder of beloved TV presenter Jill Dando, which continues to mystify experts and the public, in this in-depth documentary.

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.

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

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

Archive footage, chilling reenactments and exclusive interviews shed new light on a tragedy — and two brothers — that suspended a city in terror.

Presented by Walsh, the show profiles and assist law enforcement in the apprehension of fugitives wanted for numerous crimes, including murder, rape, kidnapping, child molestation, white-collar crime, organized crime, armed robbery, gang violence, and terrorism, and also many of whom are currently on the FBI Ten Most Wanted Fugitives list.