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.

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.

Rodney James Alcala is an American serial killer who started his murder in 1971. He has been waiting for his death sentence in a California prison since 2010.

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.

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.

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.

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.