he Golden State Killer invaded homes, tortured and terrorized families, committed fifty brutal rapes and thirteen vicious murders, and was on the loose for forty-four years. Cold case Investigators chased down thousands of leads without ever getting their man. But a new forensic tool breaks the case and exposes this remorseless predator – Joseph DeAngelo – his family, his background, and his life story; and finally, scores of victims get a measure of long-awaited justice.

Nurse Judy Buenoano survives a string of unimaginable tragedies, including two house fires, a mysterious canoe accident, and the loss of her husband, boyfriend, and child. It is discussed whether Judy is just a magnet for bad luck or if something far more sinister is at play.

John Gotti's expensive suits and swagger earned him the nickname Dapper Don. But, in reality, he was a man to be feared. A ruthless, dangerous mafia gangster who ordered hits on his enemies, his friends, and anyone who crossed him.

B.T.K. stands for Bind, Torture, Kill., the name the serial killer gave himself. After terrorizing Wichita, Kansas with multiple killings from 1974-1991 he goes quiet. But he resurfaces in 2004 and residents of the midwestern city are once again petrified. For months he plays a cat and mouse game with law enforcement and the media taunting them as he seeks the attention he craves. But then… he makes a mistake. And when “BTK” is finally apprehended it is chilling to discover that he has been hiding in plain sight for years.

The Golden State Killer invaded homes, tortured and terrorized families, committed fifty brutal rapes and thirteen vicious murders, and was on the loose for forty-four years. Cold case Investigators chased down thousands of leads without ever getting their man. But a new forensic tool breaks the case and exposes this remorseless predator – Joseph DeAngelo – his family, his background, and his life story; and finally, scores of victims get a measure of long-awaited justice.

He was a family man, living in a New Jersey suburb with his wife and three kids. But unbeknownst to his neighbors, Richard Kuklinski held a dark secret: he was the "Iceman" – a cold-blooded killer who was part-time mob hitman for hire, and full-time psychopath. This intimidating, oversized killer managed to evade the police with ease for years. That is, until a few smart investigators started connecting the dots between seemingly unrelated murders and a mystery man known as "Big Rich."

Someone snatches a student from her college campus in Indiana, while a second missing girl turns up dead months later. When terrified girls report a man trying to lure them into his van, police wonder if he is the real killer until one man confesses.

Anthony Sowell appears to be a helpful member of his Cleveland neighborhood, and he uses those charms to lure unsuspecting women into his modest house. However, once inside, he turns into the devil and leaves a twisted trail of torture, rape and murder.

A killer stalks California; the clues are scarce, until one victim gets away.

A killer stalks California; the clues are scarce, until one victim gets away.

From 1987 to 1992, young women were abducted and murdered north of the U.S.-Canadian border. A tip led cops to an unlikely suspect: a blond, blue-eyed accountant who lived with his wife in a pink house in the suburbs.

Michael Swango – High school valedictorian; Distinguished Marine; Trusted Doctor… Serial Killer. For nearly two decades, this physician-turned-murderer left a trail of death and mayhem across two continents. Hear from the local and federal authorities who brought his reign of terror to an end, while facing down one of the most crafty and cunning medical serial killers in US history. Interviews include survivors from Michael Swango’s poisoning sprees, his former colleagues, families of his victims, federal and local investigators, and a Zimbabwe journalist who helped uncover a series of murders in a rural African hospital.

In the fall of 1977, bodies of young women begin piling up in LA. Almost all of the victims are nude, discarded on hillsides showing signs of torture. It is nearly a year before two murders 1200 miles away uncover the Hillside Stranglers.

This is the shocking and gruesome mystery of John Wayne Gacy, a popular Chicago businessman and part-time clown who was leading a double life in the 1970s. By day he was a community leader and by night a predator of young men.

In 1977, the city of New York was being stalked by a seemingly faceless serial killer known as, “Son of Sam.” But after his final shooting took him to Brooklyn, a twist of fate and a little luck- led to his capture. The episode features interviews with detectives and psychologists about what he said after his arrest, why he did it… and how this quiet, soft spoken 24-year old post office employee from Yonkers turned in a serial killing monster.

In 1994 a violent serial killer hunts elderly women in a gated California community. A family member of the murderer realizes that the culprit is close to home, as the police hurry to stop her before she can kill again.

From 1987 to 1992, young women were abducted and murdered north of the U.S.-Canadian border. A tip led cops to an unlikely suspect: a blond, blue-eyed accountant who lived with his wife in a pink house in the suburbs.

In the early 90s, sadistic drug kingpin Clarence Preacher Heatley rules New York City. He rakes in millions during the crack epidemic, murdering anyone who gets in his way. After a 12-year-old boy is killed, the Feds try to take him down.

A string of horrifying fires plagues California in the Eighties and Nineties, one of them fatally trapping four people inside. Are these raging infernos accidental or is someone setting them deliberately? Years of meticulous investigation leads law enforcement to uncover a wave of terrifying fires set by a man some call the most prolific arsonist of the Twentieth century, who turns out to be none other than renowned fire investigator Captain John Orr. In a game of cat and mouse, colleagues discover dark secrets behind the man who thrived on the chaos of igniting the fires he was supposed to be fighting.

Sammy "The Bull" Gravano was the right-hand man to mafia kingpin, John Gotti. He carried out multiple murders. After his arrest, he broke the sacred oath of silence and cut a deal with the government, testifying against his former boss.

A string of horrifying fires plagues California in the Eighties and Nineties, one of them fatally trapping four people inside. Are these raging infernos accidental or is someone setting them deliberately? Years of meticulous investigation leads law enforcement to uncover a wave of terrifying fires set by a man some call the most prolific arsonist of the Twentieth century, who turns out to be none other than renowned fire investigator Captain John Orr. In a game of cat and mouse, colleagues discover dark secrets behind the man who thrived on the chaos of igniting the fires he was supposed to be fighting.

In mid-90s Miami, a crew of bodybuilders known as the Sun Gym Gang preys on the rich to rob them blind. As their greed grows, they turn to murder, resulting in one of the goriest crime scenes in Florida history.

The Zodiac Killer terrorizes Northern California in the late 1960s; he taunts the public with cryptic clues, threats of violence and ciphers that are supposed to lead to his identity, but mostly go nowhere.

In 1968, an 8-year-old girl is abducted and raped. The Los Angeles police were just moments from catching her attacker, but he eludes them and escapes to New York where he kills a young woman. This is the beginning of a monstrous killing spree of young girls and women. When police discover who is behind these horrific murders, they are shocked to find it's a handsome, charming photographer. With a string of murders already behind him, incredibly, Rodney Alcala is chosen to appear on the national game show, "The Dating Game." What happens next makes Rodney Alcala one of the most horrific serial killers in US history.

Sammy "The Bull" Gravano was the right-hand man to mafia kingpin, John Gotti. He carried out multiple murders. After his arrest, he broke the sacred oath of silence and cut a deal with the government, testifying against his former boss.

A shooting nearly destroys a boxer's career, but trouble soon finds him again when a second shooting claims his wife. Is it suicide — or murder?

More than 900 Americans died in an isolated jungle in northern Guyana in November 1978; Jim Jones has gone down in history as a madman who drove his followers to suicide, but the truth is more complicated and tragic than that.

Marjorie Diehl-Armstrong starts her life as a bright young woman with a promising future. However, her true colors soon show as she goes down a sinister path of manipulation, bank robbery and multiple gruesome murders.

Identical twins aren't always alike, especially when one might be a killer.

A look at the deal makers and hangers-on who attached themselves to Aileen Wuornos, who is known as America's first female serial killer.

David Matusiewicz, Christine Belford, and their four children live the American Dream. But when David's parents move in, his family's need for control over the children leads to allegations of abuse, a 19-month kidnapping, and ultimately, a brutal murder.