Investigate true crimes from every angle with fan-favorite series like UNSOLVED MYSTERIES and FORENSIC FILES as well as FilmRise Originals like BLOODLINE DETECTIVES, MURDERED AT FIRST SIGHT and MEET, MARRY, MURDER.

World's Most Evil Killers

S5, EP16 "Keith Jesperson"

An in-depth look at some of the world's most dangerous murderers.

World's Most Evil Killers

S8, EP3 "John Eric Armstrong"

An in-depth look at some of the world's most dangerous murderers.

World's Most Evil Killers

S8, EP9 "Billy Mansfield Jr."

Billy Mansfield Jr. moved between Florida and Michigan, targeting vulnerable women and girls.

World's Most Evil Killers

S5, EP19 "Richard Roszowski"

A profile of Richard Roszkowski, the Connecticut triple-murderer who killed his ex-girlfriend, her nine-year-old daughter and another man in a brutal attack in 2006.

World's Most Evil Killers

S7, EP19 "Paul Runge"

A killer who found some of his victims through ads, the case of Paul Runge became prominent in the debate over the death penalty in Illinois.

World's Most Evil Killers

S8, EP11 "Harry Jarvis"

When Carol Jarvis disappears, her husband tells friends and family that she's simply gone on a little holiday.

Death Walker With Nick Groff

S3, EP11 "Old Williams County Jail"

Nick tries to determine if the spirits of two infamous killers are responsible for haunting an abandoned jail.

Death Walker With Nick Groff

S3, EP2 "Haunted Western Block"

Nick will try to contact the shadow person that has been frequently seen inside the massive facility.

World's Most Evil Killers

S6, EP7 "Derrick Todd Lee"

The Baton Rouge Serial Killer, known for murdering seven women is sentenced to death for his chilling crimes.

Killers: Caught on Camera

S2, EP8 "Bailey and Monge"

In Florida, a 13-year-old girl is found stabbed over a hundred times; a teenager with a knife obsession comes under suspicion.

Killers: Caught on Camera

S2, EP2 "Wright and Hanson"

In the U.S., a woman goes missing with a large sum of money; assuming foul play, the police are running out of time to find her, until someone is caught lying on camera; in the U.K., the shocking murder of a woman in her own home sparks outrage.

Killers: Caught on Camera

S2, EP3 "Jones Jr. and Ablewhite"

In the United States, a man desperately calls the police for help after he is attacked.

World's Most Evil Killers

S6, EP11 "John Allen & Lee Malvo"

The story of the Beltway sniper attacks; John Allen and his teenage accomplice carry out a brutal series of shootings that kill ten people.

World's Most Evil Killers

S8, EP9 "Billy Mansfield Jr."

Billy Mansfield Jr. moved between Florida and Michigan, targeting vulnerable women and girls.

World's Most Evil Killers

S8, EP18 "Charlotte and Linda Mulhall"

In March 2005, the gardaí recover human body parts from the Royal Canal in Dublin.

World's Most Evil Killers

S5, EP19 "Richard Roszowski"

A profile of Richard Roszkowski, the Connecticut triple-murderer who killed his ex-girlfriend, her nine-year-old daughter and another man in a brutal attack in 2006.

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