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. Even though she worked in a dialysis center, where there is normally little to cause complications and death, the number of patients dying on her watch alerted and disturbed other hospital staff. Even so, it took far too long for her managers and the authorities to find out what she had been doing. When, to their horror, they uncovered her crimes, Kimberly became national news.