Heather Irene Pressdee was born on August 28, 1982. She grew up in the United States. She attended the Community College of Allegheny County from 2003 to 2004. She studied there for a time but did not graduate. After her time at college, she began working in the nursing field.

Heather Irene Pressdee was a nurse in Pennsylvania who committed a series of murders at nursing homes. She intentionally gave lethal doses of insulin to patients over a period of time. Her first two victims were James Bartoe, 55, who died on December 4, 2022, and Joseph Campbell, 83, who died on December 25, 2022. The third victim was Nicholas Cymbol, 43, who died on May 1, 2023.

Pressdee was arrested in May 2023. She faced charges for three murders and 19 attempts to commit murder, with connections to a total of 17 patient deaths. To avoid the death penalty, Pressdee pled guilty to all charges. The murders for which she pled guilty included those of James Bartoe, Gerald Shrum, who was 90 years old, and Nicholas Cymbol.

On May 2, 2024, Heather Pressdee was sentenced to three consecutive life sentences along with an additional 380 to 760 years in prison. She is currently serving her sentence at SCI Muncy in Pennsylvania.