This title highlights hospital horror. Gaunt and ghostlike, Charles Cullen was a lifelong misfit who quietly became one of the most prolific serial killers in U.S. history. Over the course of sixteen years, he walked the hallways of hospitals and nursing homes in New Jersey and Pennsylvania, where he worked as a nurse, 'ministering' to the elderly and other gravely ill patients in critical care units. The self-appointed grim reaper played a cruel game, deciding which of his charges should die...and snuffing out their lives with fatal drug overdoses.