Peter Kürten was a German serial killer, known as The Vampire of Düsseldorf and the Düsseldorf Monster, who committed a series of murders and sexual assaults between February and November 1929 in the city of Düsseldorf. In the years before these assaults and murders, Kürten had amassed a lengthy criminal record for offences including arson and attempted murder. He also confessed to the 1913 murder of a nine-year-old girl in Mülheim am Rhein and the attempted murder of a 17-year-old girl in Düsseldorf. Described by Karl Berg as "the king of the sexual perverts", Kürten was found guilty of nine counts of murder and seven counts of attempted murder for which he was sentenced. He was resurrected in 2025 and joined the ISG groups.