Anthony Sowell charms and lures women into his modest house.
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.
In the early 90s, 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.
David Matusiewicz, Christine Belford and their four kids live the American dream; 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.
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.
A killer torments young women and his own family in the Pacific Northwest.
A killer stalks California; the clues are scarce, until one victim gets away.
In the mid 1980s, Kansas City women start to vanish; they all share one thing in common, an odd connection to the same man who calls himself "The Slave Master"; police must be just as wily if they want to bring down this serial killing sadist.
The host sheds light on the American serial killer who calls himself "The Slavemaster" and reveals the twisted methodology behind his heinous crimes.
Host Donnie Wahlberg sheds light on serial killer Larry Hall, from his relationship with his identical twin brother to his murderous rampage against young women across the American heartland in the 1990s.
The only thing scarier than a serial killer is one hiding in plain sight.
The cops wonder if a series of deaths means a black widow is spinning her web.
Host Donnie Wahlberg delves into the notorious crimes of Keith Hunter Jesperson, a serial killer in the 1990s, who drew smiley faces on his confession letters to local authorities.
A happy face is supposed to be a joyful symbol, unless it's on a letter from a killer.
From 1987 to 1992, rapes, abductions and murders of young women occur north of the U.S.-Canadian border; a tip leads cops to an unlikely suspect: a blond, blue-eyed accountant who lives with his wife in a pink house in the suburbs.
When college-aged women in Charlottesville, Va. go missing, the search for answers leads authorities to local star athlete Jesse Matthew Jr.; in a shocking story, two women are killed, but another survives to bring the murderer to justice.
Sammy the Bull Gravano was the right-hand man to mafia kingpin, John Gotti and carried out multiple murders; after his arrest, he breaks the sacred oath of silence and cuts a deal with the government, testifying against his former boss.
In the fall of 1977, bodies of young women begin piling up in Los Angeles; almost all of the victims are nude, discarded on hillsides, and show signs of torture; it is nearly a year before two murders 1,200 miles away uncover the Hillside Stranglers.
While closing shop in Anchorage, Alaska, Samantha Koenig is approached by a man known in the community as a business owner and caring father who kidnaps her, triggering a manhunt.
John Gotti's expensive suits and swagger earn him the nickname Dapper Don; in reality, he is a man to be feared, a ruthless, dangerous Mafia gangster who orders hits on his enemies, his friends, and anyone who crosses him.
After a 40-year manhunt, investigators finally unmask the man suspected of being California's most prolific serial killer.
Law enforcement personnel identify the Golden State Killer as being Joseph DeAngelo who was hiding in plain sight.
One of the most prolific rapists and serial killers in Alaska's history; for more than a decade, The Butcher Baker kidnapped young women and brought them into the wilderness and hunted them like prey.
For years, The Butcher Baker serial killer was hiding in plain sight; he presented himself as a soft-spoken family man; one woman's story leads police to a shocking discovery inside Robert Hansen's home.
In November 1974, the DeFeo family were found murdered inside their beautiful seaside home; the mother, father and four of their children were shot in the back as they lay sleeping in their beds.
Para psychologists and psychics descend on the house to investigate who murdered the DeFeo family and why.
Revisiting an investigation into the case of an 8-year-old girl who was abducted, raped, and left for dead in 1968.
With a string of murders already behind him, Rodney Alcala appears on the TV show The Dating Game where he wins the prize: a date; ultimately Rodney is rejected by the girl, which many believe triggered yet another rampage of serial killings.
For many years, the Iceman, Richard Kuklinski, had literally gotten away with murder, but investigators were on to him; there was very little evidence, connecting the Iceman to his crimes.
A string of horrifying fires plagues California in the Eighties and Nineties, one of them fatally trapping four people inside.
In a race against time, investigators hunt for an arsonist setting devastating fires across California; to their complete shock, the man responsible turns out to be none other than renowned fire investigator Captain John Orr.
From 1976 to 1977, David Berkowitz terrorizes New York City under his creepy self-given moniker: the "Son of Sam"; he is among the most infamous serial killers in American history.
In 1977, the city of New York is stalked by a seemingly faceless serial killer known as "Son of Sam"; after his final shooting takes him to Brooklyn, a twist of fate and a little luck leads to his capture.
For years the BTK killer plays a cat and mouse game with law enforcement and the media taunting them as he seeks the attention he craves.
The summer of 1985 was one of the hottest Los Angeles had seen in a century. But terrified residents weren't sleeping with the windows open; a killer known as the "Night Stalker" was on the loose.
A tip from a teenage boy leads to the identity of the Night Stalker and twenty-four hours later a mob of angry citizens track him down and capture him.
Desperate for answers community members live in terror waiting for the man dubbed the Co-Ed Killer to strike again.
In April 1973, Edmund Kemper, 24, murders six coeds in and around the city of Santa Cruz, Calif., shaking the community to its core.
The story of the millionaire heir to a vast real estate fortune who has been linked to the deaths of his wife, his best friend, and his neighbor.
Six weeks after jumping bail in Galveston, Texas, Robert Durst is caught on a store security camera in Pennsylvania shoplifting a sandwich and is quickly sent back to Galveston to stand trial for the murder of his neighbor, Morris Black.
For nearly two decades, physician-turned-murderer Michael Swango leaves a trail of death and mayhem across two continents.
Dr. Michael Swango takes an oath to do no harm, but does just the opposite; suspicious illnesses and deaths follow the once-trusted physician-turned-killer from hospital to hospital for nearly two decades and across two continents.
In Chicago, community leader and part-time clown John Wayne Gacy leads a double life, transforming into a monster who preys on male teenagers and becomes the most prolific serial killer of his day.
Charles Manson is a violent predator who has powers of persuasion that make it possible for him to convince his hippie followers to brutally murder innocent strangers.
In Northern California, a masked predator meticulously plans his sexual assaults by studying the habits and routines of his female prey; after 27 years on the loose, police close in on the man they believe to be the NorCal Rapist.
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.
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.
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.