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.

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.

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.

Serial killer Earle Leonard Nelson was born on May 12, 1897 and was hanged in Winnipeg on January 13, 1928. He escaped from Napa State Hospital several times. After his last escape, he began his series of murders in 1926.

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.

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.

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.