Episode 1: David and Goliath

Alexis’s childhood friend claims to have key evidence that could lead to solving the ten year mystery of the Long Island Serial Killer murders.

Next Up

'Golden State Killer' Joseph James DeAngelo Pleads Guilty To 13 Murders

“I destroyed all their lives. So now I’ve got to pay the price,” he reportedly has said.

Jeffrey Dahmer's Murderer Explains Why He Killed The 'Milwaukee Cannibal'

Christopher Scarver, who is serving time for killing his boss during a robbery, insists that Jeffrey Dahmer did not feel any remorse for his crimes.

Police Release Video of Long Island Serial Killer Victim in Her Final Hours

Over a decade after the remains of 11 people were found along a Long Island beach, police released new surveillance video of one of the victims shortly before meeting her killer.

6 Things To Know About Aileen Wuornos

Wuornos, a former sex worker, claimed that her victims had either raped or attempted to rape her, and her serial killings were committed in self-defense.

Prolific Serial Killer Nurse Charles Cullen May Have Killed As Many As 400 Patients

The murderer’s 16-year medical career in New Jersey and Pennsylvania ended after he was arrested in 2003.

How Elusive Serial Killer Ted Kaczynski Was Unmasked As The Unabomber

The self-professed anarchist was captured in 1996 hiding out in a primitive Montana cabin.

Infamous Canadian Couple Known As 'The Ken & Barbie Killers' Videotaped Their Crimes

Canadians Paul Bernardo and Karla Homolka were arrested for slaying schoolgirls in the early ‘90s, including her teenage sister.

5 Recent Developments Involving Serial Killer Clown John Wayne Gacy

The case of the monster who murdered dozens of boys and young men continues to evolve today.

'Happy Face Killer': How Keith Jesperson’s Daughter Discovered His Deadly Secret

“There was just something ‘off’ about him,” Melissa Moore says of the serial killer.