Yang Xinhai was born on July 29, 1968. As the son of a poor farming family, he was introverted and tenderly strung as the youngest child. At school he had to provide himself with food, which was always a challenge without money. When he was 17, he dropped out of school to join migrant workers.

The California serial killer Edmund Kemper started his murder series at just 15 years old: he shot his grandmother and then stabbed her several times.

Andrej Romanovich Chikatilo is a serial killer from Ukraine. He started his first murder at the age of 41 and committed at least 53 murders of young women and children. The search for this murderer was one of the largest in Russian crime history.

Daniel Camargo Barbosa was a sadist and serial killer from Colombia. He killed about 150 young girls in Colombia and Ecuador in the 1970s and 1980s.

Peter Sutcliffe had raided and raped at least 20 women, including at least 13 women, in the West and South Yorkshire counties of Leeds and Bradford in 1975.

Patrick Kearney is an American necrophile serial killer who has at least 43 people on his conscience. Kearney's profile-less murder scheme, which is found in most serial killers, made it difficult for the police to catch him.

Carl Panzram (AKA: Jeff Rhoades, John O’Leary) was born on June 28, 1891 in Minnesota and executed on September 5, 1930 in Leavenworth, Kansas Federal Prison.

Mexican-born Juan Corona employed seasonal workers on a California farm in the 1970s. He also gave them a place to sleep on the site where 25 bodies were later discovered. He was sentenced to 25 life sentences with no prospect of pardon.

Peter Kürten, also called Vampire from Düsseldorf, was a multiple serial killer at the beginning of the last century. He committed a series of sexual crimes, robberies and murders of children and adults.

Pedro Alonso Lopez is a Colombian serial killer who raped and killed up to 300 girls in South America. He was called the monster by the Andes after leading the police to a mass grave of 53 girls in 1980.

Henry Howard Holmes's real name Herman Webster Mudgett was born on May 16, 1860 and was executed on May 7, 1896 in Philadelphia, Pennsylvania. The exact number of its victims is not known, it is assumed that up to 200 victims.

Serial killer William Bonin killed at least 21 people in 13 months. He mostly dumped his victims on highways, hence the nickname The Freeway Killer.

The French serial killer Joseph Vacher lived from 1868 to 1898. The police assume that he had at least 11 people on his conscience. Vacher's victims were mostly young agricultural workers. It didn't matter whether they were female or male.

Friedrich Heinrich Karl Haarmann was a German serial killer who was born in Hanover on October 25, 1879 and executed on April 15, 1925 with a guillotine.

Alexander Pichushkin is a Russian serial killer from Moscow. In 1992 the then 18-year-old student began planning the so-called checkerboard murders together with his friend and classmate Mikhail Odiichuk.

Theodore "Ted" Robert Bundy killed at least 28 young women between the age of 18 and his final arrest in 1978. Ted Bundy was found to have murdered 28 women, but at least 36 victims are suspected.

Luis Garavito is a rapist and serial killer from Colombia. He was born on January 25, 1957. At the age of 35, he started talking to small children, luring them away, and then raping and killing them. He remained undetected for seven years.

Anatoly Onoprienko was a 52-time serial killer from Ukraine. He started his murder series at the age of 19. Most of the time he went to abandoned houses and killed the whole family.

Dennis Nilsen is a necrophilic serial killer who killed at least 15 men in London between 1978 and 1983. His nickname is also the Muswell Hill Murderer or the Kindly Killer.

"Kiss my ass.": Those were the last words of serial killer John Wayne Gacy. He was sentenced to death twelve times for 33 murders of young men and children - world record. The actual number of murder victims was taken to his grave by one of the most notorious serial killers of all time. He died from a lethal injection on May 10, 1994 at the Stateville Correction Center.

Serhiy Tkach was a former police inspector from Ukraine who became a serial killer throughout his career. He admitted to having committed up to 100 murders of young girls.

Randy Steven Kraft is an American serial killer who mainly took young men on the freeway in the early 1970s and then killed them.

Karl Großmann was born on December 13, 1863 in Neuruppin and died on July 5, 1922 in Berlin. The butcher of Berlin mostly invited young women to his house and killed them.

Joachim Kroll was a German cannibal and serial killer. He was convicted of eight murders despite admitting fourteen murders. Kroll started his series of murders in 1955 after his mother died. He worked as a toilet man for Mannesmann, later for Thyssen-Krupp.