Irish American serial killer nurse Jolly Jane
It's believed that this, Irish American, Jane Toppan's tale is the stuff of nightmares. This serial killer Irish nurse is believed to have murdered over 100 patients. Bundy, Gacy, Manson – all of these names are well known as belonging to serial murderers, but how many people have heard of "Jolly Jane", a nurse?
Source: irishcentral.com