Michael Swango is a former physician who became infamous for his involvement in multiple cases of patient deaths. He worked in various hospitals across the United States during the 1980s and 1990s, where he was suspected of administering lethal doses of drugs to patients. His medical career was marked by a series of suspicious incidents that raised alarms among colleagues and hospital staff. In 1997, Swango was arrested and later convicted for fraud and other charges, leading to a lengthy prison sentence. Investigations revealed that he may have been responsible for the deaths of several patients, making him one of the most notorious medical serial killers in American history. His case has drawn comparisons to other infamous figures in true crime, such as Harold Shipman.