Infamous serial killer suspected to have killed around 400 people over the course of his 16-year nursing career.
He dropped out of high school and enlisted in the U.S. Navy, but was medically discharged in 1984 due to mental instability and multiple suicide attempts.
He moved from hospital to hospital, murdering patients by injecting them with drugs.
His mother was killed in a car accident while he was a teenager; his sister was driving the car.
He once worked at Morristown Memorial Hospital in Morristown, NJ, the town in which actor Peter Dinklage was born.