H. H. Holmes
One of the first recorded serial killers, in 1893, H. H. Holmes opened a hotel of horrors in Chicago which he designed for the sole purpose of carrying out the most heinous of murders. Locals called the place "The Castle" due to its immaculate appearance.
Torture rooms —including one that expelled poisonous gas — filled the Castle to the brim. Holmes would invite people into these rooms and then kill them in a variety of horrific ways.
Holmes eventually left Chicago for Texas, where he planned to open a similar death hotel. These plans quickly fell through, though, and so he wandered across the U.S. and Canada. Police originally arrested him in Missouri on charges of selling mortgaged goods but after some investigation found out the true depth of his crimes.
Police were able to confirm nine murders, but believed that Holmes may have killed up to 200 people over the course of his life, a number they based on missing people reports during the time of his criminal activity. U.S. authorities hanged Holmes in 1896 at Moyamensing Prison. Wikimedia Commons
Between 1926 and 1927, Earle Nelson managed to kill more than 22 people across America. The prolific murderer would often prey on unsuspecting landladies after pretending that he wanted to rent a room in their home.
The cops finally arrested Nelson in June 1927 in Canada, where he had murdered his last two victims. The husband of Emily Patterson, one of his last victims, found his wife's body under their bed. This prompted the investigation that soon led to Nelson's arrest. Canadian authorities quickly sentenced him to death and hanged him the following January. Wikimedia Commons
With a murder total somewhere between 49 and 60 people, the Chessboard Killer (born Alexander Pichushkin) is one of Russia's most notorious serial killers. He would often use the promise of free vodka to lure people to his home, where he would drink with them before murdering them.
In 2006, Alexander murdered his final victim, Marina Moskalyova. On watching subway footage, police identified Pichushkin as Moskalyova's escort, and used this as evidence that would lead to his arrest and final conviction. Pichushkin is now serving life in prison.Wikimedia Commons
John Wayne Gacy
Known as the Killer Clown, John Wayne Gacy dressed up as Pogo the Clown for community events near his home in Cook County, Illinois. Between the years of 1972 and 1978, Gacy was responsible for the deaths of at least 33 young boys, all of whom he buried in the walls and basement of his home.
It was only when 15-year-old Robert Jerome Piest went missing that the police began to suspect Gacy, as he had seen the boy just before his disappearance. Authorities began interviewing people in connection with Gacy and ultimately searched his home, where they found the remains of his victims. Once the police had arrested him, Gacy reportedly said, “The only thing they can get me for is running a funeral parlor without a license.”
After sitting on death row for 14 years, he was finally executed by lethal injection in 1994. Wikimedia Commons
John George Haigh
In the early 1940s, John George Haigh rented a small workshop in Sussex, England. In it solely for the money, he lured wealthy people back to the space where he would subsequently shoot them in the the head.
What happened next was a lot more grim: Haigh would dispose of the bodies by soaking them in acid, which disintegrated them.
Haigh's murder of Olive Durand-Deacon would signal the end of the "Acid Killer's" run. Durand-Deacon's friend reported her missing shortly after the murder, and the police began to investigate Haigh. While searching his workshop, they found human gallstones and a small part of some dentures. Authorities arrested Haigh, and soon he went on trial for murder.
In an apparent attempt to avoid the death penalty, Haigh decided to plead insanity, claiming that he also drank the blood of his victims.
The insanity plea didn't work, and the judge sentenced Haigh to death. On August 19, 1949, authorities hanged him at Wandsworth Prison.Wikimedia Commons
Known simply as The Night Stalker, Richard Ramirez haunted the streets of Los Angeles during the 1980s. Over the course of a little more than a year, he broke into several area homes and killed 13 people.
Ramirez's prior criminal record for lesser crimes would ultimately do him in. One witness identified an orange Toyota that Ramirez drove while fleeing a crime scene, and the license plate number led police to his file, which prompted a manhunt. Suddenly, his face appeared on the front page of every newspaper in the area. Ramirez attempted to flee, but a group of locals apprehended him, holding him captive until police arrived.
A judge called his crimes acts of "cruelty, callousness, and viciousness beyond any human understanding," and sentenced Ramirez to 13 death penalties. Ramirez would not see a single one: the serial killer died while waiting on death row in 2013.Wikimedia Commons
Although the courts convicted him of six or more counts of murder, it's unclear whether Ottis Toole was actually a serial killer. Along with his accomplice and lover, Henry Lee Lucas, Toole claimed responsibility for many deaths throughout the 1970s and 1980s in Jacksonville, Florida.
In the end, however, police definitively attributed just one murder to Toole, that of six-year-old Adam Walsh, whom he admitted to decapitating. In 1996, Toole died in prison of cirrhosis.Wikimedia Commons
Perhaps one of the most famous serial killers of our time, Ted Bundy committed his crimes throughout the 1970s in various states including Washington, Idaho, and Utah. An attractive man, Bundy lured women to isolated areas where he would kill them, often by decapitating them. Occasionally, he would return to the bodies and perform sexual acts upon them.
Officers first caught Bundy in 1975 in Florida, but he somehow managed to escape and commit more crimes over the following three years. In 1978, the police captured Bundy for the second time and a court sentenced him to three death penalties. He died in the electric chair in 1989.Wikimedia Commons
Signs of Gary Ridgway's murderous future appeared early on in life. At age 16, Ridgway committed his first attack when he lured a six-year-old boy into the woods and stabbed him through the ribs. According to the statements he gave in court, Ridgway later killed so many women — many of whom were prostitutes and runaways — that he simply lost count.
Ridgway, known as the Green River killer, carried out the killings in Seattle, and though he has confessed to a great number of them, it's not clear how many he actually killed. Today, he's still alive and serving a life sentence in Florence, Colorado.Wikimedia Commons
From the Werewolf of Wysteria to the Moon Maniac, Albert Fish had many nicknames, none of which truly convey the horror of his crimes.
During the 1920s and 1930s, police believed Fish had killed up to nine people in New York, although he only confessed to three. In 1928, Fish slipped up after killing ten-year-old Grace Budd. He'd abducted the girl, telling his parents that he was taking her to a party. He later sent the girl's mother an anonymous letter in which he claimed to have strangled and then eaten the child.
The paper on which Fish wrote the letter led the police to him. In 1935, a judge sentenced him to death by electric chair. Wikimedia Commons
By some accounts the most prolific female serial killer in history, Elizabeth Bathory was a Hungarian countess with a lust for blood.
Between 1585 and 1609, accounts allege that she enlisted the help of four accomplices to torture and kill young women and children for her pleasure. Rumors of her crimes started to sweep through high society, and it was her guardian György Thurzó who finally arrested Bathory after reportedly finding one dead girl and another dying on the grounds.
Since her family was so very well-to-do, Bathory never had to face a trial but she was imprisoned in 1609. She died of natural causes five years later. Wikimedia Commons
Albert DeSalvo, The Boston Strangler, made headlines in the 1960s for a series of rapes and murders and made him one of the most infamous serial killers of the era.
Ultimately, police caught him in 1964 and DeSalvo soon confessed to killing 13 different women. After the authorities transferred him to a high security prison, they soon found him stabbed to death in 1973. No one was ever convicted of his murder.Wikimedia Commons
Between 1983 and 1985 Charles Ng (along with his partner in crime, Leonard Lake) tortured and killed up to 25 people at Lake's California cabin, which included a custom-built dungeon where many of the killings took place. The duo's victims included friends, neighbors, family members, and some unfortunate strangers.
"You can cry and stuff, like the rest of them, but it won't do any good. We are pretty -- ha, ha -- cold-hearted, so to speak," says Ng in one of the two videotapes showing the torture and killing of their victims.
However, it wasn't Ng's torturing and killing that led police to him, but his shoplifting. In 1985, Ng tried to steal a vice from a San Francisco store. The store owner called the cops after Ng had left, and when Lake returned to supposedly pay off the debt, the police were suspicious of him since he did not match his ID. In fact, the man on the identity card was Robin Stapley, who was missing at the time. This prompted the police to search the cabin where they found evidence of the murders, including records and tapes.
Ng fled to Canada, where police there arrested him for yet another theft incident. They then sent him back to California, where authorities tried him for murder. The 55-year-old is currently awaiting the death penalty.Wikimedia Commons
Luis Garavito, a Colombian serial killer all too fittingly known as The Beast, confessed to raping, torturing, and murdering 147 impoverished boys throughout the country. When police arrested Garavito in 1999, they actually charged him with 170 counts of murder, and some suspect that his true tally may reach above 300.
Despite the gravity of his crimes, he received just a 22-year sentence, as Colombian law only allowed up to 30-year sentences for any crime. Likewise, since Garavito helped the police find some of his victims' bodies, his overall sentence was reduced. Garavito is currently in prison, carrying out that sentence. Wikimedia Commons
The Butcher of Hanover (AKA Fritz Haarmann) killed at least 24 young boys in Germany between 1918 and 1924.
Two undercover police officers finally apprehended Haarmann when he was arguing at a train station with teenager Karl Fromm, whom Haarmann had previously raped. Soon after, Fromm told the police of this crime and they began to search Haarmann's home, where they found evidence of his many murders.
Even among other infamous serial killers, these murders were particularly gruesome: Haarmann would often mutate and dismember his victims, sometimes biting right through their necks. He was beheaded at Hanover prison in 1925.Wikimedia Commons
The prosecutor at William Bonin's trial dubbed him the "the most arch-evil person who ever existed." Over the course of just 12 months between 1979 and 1980, Bonin murdered between 21 and 36 people. He often discarded the bodies along the California freeway, earning him the name, The Freeway Killer.
The authorities already knew of Bonin because they had previously convicted him of sexual assault and the murder of a young hitchhiker in 1979. While on parole, he went onto molest another young boy, an act which should have landed him back in prison but didn't due to a "clerical error."
Police then began to surveil Bonin in 1980 and soon arrested him. He spent many years on death row and died via lethal injection in 1996. Wikimedia Commons
The Beast of Ukraine, Anatoly Onoprienko, earned his title by killing 52 people between 1989 and 1996. After launching a massive manhunt, the police finally arrested Onoprienko in 1996. Upon his arrest, he claimed inner voices urged him to commit murder.
At his trial, the killer narrowly escaped the death penalty (because Ukraine had just entered the Council of Europe, which prohibits its members from using the death penalty) and instead got life in prison. Nevertheless, he died of heart failure in 2013. Wikimedia Commons
Dean Arnold Corll
Responsible for the Houston Mass Murders, Dean Arnold Corll joined two others (David Brooks and Elmer Wayne Henley, Jr.) in the horrific torture and killings of more than 28 people during the 1970s. The media later dubbed him the Candy Man since he owned a candy factory and would give sweets to local children.
Corll attempted to kill both of his accomplices in 1973, but Henley shot Corll dead before he could carry out the act.Wikimedia Commons
While working as a prostitute in Florida between 1989 and 1990, Aileen Wuornos killed seven men. She later claimed, however, that all of her victims had attempted to rape her, and that she carried out the killings in self-defense.
Either way, the cops caught Wuornos in 1991, after witnesses had seen her driving a victim's car and gave an accurate description of her. After a lengthy trial, the judge ordered the death penalty.
In 2001, Wuornos chose to terminate any pending appeals and came claen about her motives, writing: "I killed those men, robbed them as cold as ice. And I'd do it again, too. There's no chance in keeping me alive or anything, because I'd kill again. I have hate crawling through my system...I am so sick of hearing this 'she's crazy' stuff. I've been evaluated so many times. I'm competent, sane, and I'm trying to tell the truth. I'm one who seriously hates human life and would kill again."
On October 9th 2002, she was executed by lethal injection. Wikimedia Commons
Paul John Knowles
Nicknamed the Casanova Killer due to his good looks, Paul John Knowles claimed to have killed 35 people by means ranging from strangling to shooting between July and November 1974, starting across the southern United States.
A Florida Highway Patrol trooper finally caught Knowles with a stolen car in late 1974. However, Knowles was able to escape, and kill the trooper before a civilian with a shotgun happened to find him evading authorities nearby.
A month later, while in a vehicle with Sheriff Earl Lee and Agent Ronnie Angel, Knowles grabbed the sheriff's gun in an attempt to shoot his captors. During the struggle, Angel shot Knowles dead.Wikimedia Commons