Two registered nurses who doubled as serial killers are featured here: Kim Saenz - Kimberly Clark Saenz was a nurse. Almost ten years ago now, in 2008, she worked in a clinic called the DaVita Lufkin Dialysis Center. The clinic was- and still is- in Lufkin, a small blue collar city in East Texas of around 33,000 souls. But rather than care for her patients, she decided to kill. Because of a home life fraught with difficulties- she and her husband has fought, he had filed for divorce, and even taken out a restraining order against her- Kimberly's unrestrained and misdirected anger was taken out on her patients. And this was just the latest in a long list of healthcare jobs that Kimberly had held, after a spate of firings for various misdemeanours. Beverly Allitt - It is hard to believe that a young female could be capable of murder, let alone multiple murders. It is even more shocking that a female nurse could carry out such terrible crimes. That is exactly what Beverly Allitt did though. This nurse is Britain's most infamous female serial killer and also goes by the name of the Angel of Death due to her responsibility to care for others but instead used her nursing position to kill people. Over a short period of fifty-nine days in her job as a nurse in a children's ward, she killed four young children and attempted to kill at least nine others either by causing cardiac arrest or hypoglycemia.