Jane Toppan

Jane Toppan, nicknamed Jolly Jane, was an American serial killer who murdered 12 people in Massachusetts between 1895 and 1901, although she confessed to killing 31 and is suspected of killing more than 100. The killings were carried out in Toppan's capacity as a nurse, targeting patients and their family members. Toppan, who admitted to having committed the murders to satisfy a sexual fetish, was quoted as saying that her ambition was "to have killed more people—helpless people—than any other man or woman who ever lived".