Dennis Nilsen: In Love with Death

Beginning in the early 1980s, Washington state was gripped with fear as the bodies of young women began appearing along the banks of the Green River. As the number of victims grew, investigators created a taskforce and enlisted the help of the FBI, but it took almost 20 years to finally catch their man. Through startling and chilling tapes and video archive of Gary Ridgway’s police interviews, The Green River Killer: Mind of a Monster reveals, in Ridgway’s own disturbing words, insight into his evil: from how his troubling behavior as a child morphed into his morbid motivation to murder as many women as possible.

In 1999, teen Rocío Wanninkhof is murdered. Her mother's ex-partner, Dolores Vázquez, is suspected. Did she do it? A second victim reveals the truth.

"He was attractive, cultivated, very sensitive, very empathetic". Lawyer Astrid Wagner's first impression when meeting the serial killer Jack Unterweger. As a young law student she had close contact with him: "It was a nice feeling to be needed." On June 28, 1994 Unterweger is convicted for the murder of nine prostitutes. Six hours later, he hangs himself in his cell. Twenty years later, Thema unrolls the incredible story of the woman murderer and asks former friends and other companions how Jack Unterweger influenced their lives.

In the shadow of the 1893 Chicago World's Fair, a druggist-turned-hotelier killed and dismembered more than two dozen guests at his “Murder Castle.”

Peter Moore, the murderer known as the 'man in black', has now served 25 years in prison. Back in 1995, he terrorised communities along the north Wales coastline, killing four men and allegedly attacking many more. By day he was a well-respected shopkeeper and cinema owner in Kinmel Bay, and by night he was a sadistic killer who seemed to target gay men. In this special edition of Dark Land, former chief constable Jackie Roberts returns to re-examine the hunt for the man who would go down in history as Wales’s worst serial killer. Moore is revealed as a man with a violent secret life, hiding in plain sight. Beneath the façade of a respectable businessman was a mind warped by a dysfunctional upbringing; a man who seized upon a climate of gay prejudice to embark upon a 20-year spree of savage attacks, confident his victims wouldn’t feel able to come forward to complain. The ultimate question is, could Moore have been stopped before he went on to kill and kill again?

Between 1962 and 1966, sex murderer Jurgen Bartsch cruelly tortured and killed four children in an old air raid bunker in Germany. This documentary examines the personality of the killer who died in 1976 during voluntary castration surgery at the age of 30. Vilified by the press for his heinous crime, Bartsch also became a case study for famous found criminal psychologists like Alice Miller (who maintains that no one abuses without being abused as a child, and murderers tend to have their own childhood abuse denied by the adults around them). Bartsch never met his birth parents, he was raised in a clinic and later adopted by a cold, unaffectionate couple. By the age of 15, he tortured and killed his first child victim. This informative, fact-filled documentary provides enough details for viewers to come away with a broader understanding of the nature of the criminally insane and society's role in their formation.

The Bruce McArthur serial killer case shocked Canada’s largest city, and the whole country, when he was convicted of eight grisly murders. How did McArthur avoid arrest for nearly a decade? This film explores the untold story of Toronto’s Gay Village, and the victims of these horrific crimes.

Piers Morgan sits down with Bernard Giles, a convicted serial killer who is willing to admit to his heinous crimes, and asks what motivated the man to commit those brutal acts.

When it comes to serial killers, there aren't many stories more chilling than the one of Fred and Rosemary West. The murderous duo raped, tortured and murdered at least a dozen young British girls between 1967 and 1987 in Gloucestershire, including several of their own daughters. Learn of how two of Britain's most notorious serial killers were able to get away with their crimes for so long, how they hid the victim's remains within the confines of their own home, and how they were eventually taken down.

Hosted by NBC News investigative journalist Stephanie Gosk, this brand new two-hour special will offer an intimate look into the life of Joe DeAngelo, the suspect in custody, through new and exclusive interviews from those who were closest to him and offering a gripping depiction of the prime suspect in a decades-long manhunt. To his family, friends, and former colleagues, DeAngelo lived the life of the classic “average Joe” - a father, grandfather, veteran, and even former police officer. DeAngelo now stands accused of being the man behind one of the most ruthlessly enduring crime sprees of all time and is believed to have raped more than 45 women and murdered at least 12 people. He is currently charged with 12 counts of first degree murder and has so far not entered a plea. Joining Gosk is Bay Area detective Paul Holes, who helped search for the Golden State Killer for nearly a quarter-century and played a key role in the arrest of Joe DeAngelo.

Albert Fish, the horrific true story of elderly cannibal, sadomasochist, and serial killer, who lured children to their deaths in Depression-era New York City. Distorting biblical tales, Albert Fish takes the themes of pain, torture, atonement and suffering literally as he preys on victims to torture and sacrifice.

The third installment of the infamous "is it real or fake?" mondo series sets its sights primarily on serial killers, with lengthy reenactments of police investigations of bodies being found in dumpsters, and a staged courtroom sequence.

This documentary traces the capture of serial killer Guy Georges through the tireless work of two women: a police chief and a victim's mother.

Wayne Adam Ford is a convicted serial killer on Death Row. Victoria Redstall is a model who trained to be a cop. Together, and against all odds, Ford and Redstall take us on a roadtrip into the mind of a serial killer and attempt to find the identity of his first victim. All that remained of her was a dismembered torso.

This documentary examines a selection of real life serial killers and compares them to the fictional Hannibal Lecter.

Three women contemplate their relationship with convicted serial killer Richard Ramirez.

This documentary about serial killers and FBI Behavioral Sciences profilers features interviews with Ed Kemper and Ted Bundy as well as crime victims and law enforcement officials. The film includes some dramatic recreations.

Detective Rick Buckner has to prove Keith Jesperson is the serial killer known as Happy Face Killer, guilty of murdering a woman in 1995, and has to make sure he is apprehended before he kills again.

This video takes a walk through this horrifying case to uncover the dark secrets he kept hidden from the world for decades. He's one of the few serial killers that was never convicted of murder.

A film by John Mikulenka documenting various people's investigation into the mystery of the Zodiac.