Dr. Michael Swango is an American serial killer and former licensed physician. It is estimated that Swango has been involved in as many as 60 fatal poisonings of patients and colleagues, though he admitted to only causing four deaths. He was sentenced to life imprisonment without the possibility of parole.

Swango did not often vary his methods of murder. With non-patients, such as his co-workers at the paramedic service, he used poisons, usually arsenic, slipping them into foods and beverages. With patients, he sometimes used poisons as well, but usually he administered an overdose of whichever drug the patient had been prescribed, or wrote false prescriptions for dangerous drugs for patients who did not need them.

Swango displayed a number of bizarre behaviors unrelated to his fascination with death. He is reported to have practiced compulsive hoarding of food, and he slept on a mattress on the floor of his bathroom rather than in a bedroom. Many of his co-workers found him unusually talkative and physically restless, suggesting a hyperactivity disorder.

Two page handwritten letter. Letter is general content and is signed Michael. Original matching handwritten envelope is included.