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.

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.

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.

Donald Henry Gaskins alias Pee Wee was often raped by men in his youth. When Gaskins was raped again by a fellow inmate at the age of 20, he cut his throat - his first victim.

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.

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