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Description
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Isaac Heller: The 19th-Century American Serial Killer

Early Life

Isaac Heller was born on May 2, 1809, in Dauphin County, Pennsylvania, United States. Little is documented about his early life and upbringing, but he later became infamous for a series of brutal murders in the early 19th century.

First Known Murder (1830)

In 1830, Heller committed his first recorded murder:
  • Catherine Muckeroy, aged 9, was decapitated in Pennsylvania. This heinous act shocked the local community, leading to Heller's arrest. However, he was found not guilty by reason of insanity and was subsequently institutionalized.

Release and Subsequent Murders (1836)

After spending several years in confinement, Heller was released, only to commit more atrocities on February 27, 1836, in Liberty, Indiana:
  • Elizabeth McCollan Heller (his wife) was bludgeoned to death.
  • John Wesley Heller (his son) was decapitated.
  • Sarah Heller (his daughter) was bludgeoned to death.
  • Mary Heller, his 3-month-old daughter, was also bludgeoned to death.
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Victims
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Confirmed Victims: (5)
  • Catherine Muckeroy Age: (9), Date of Death: 1830
  •     ...View 4 additional victims
    Links to Additional Sources (6)
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    Killer's Details

    Isaac

    Heller

    May 2, 1809 Dauphin County, Pennsylvania, United States

    April 25, 1836 (aged 27) Liberty, Indiana, United States

    Executed by hanging

    Male

    White

    Capital murder

    5

    1830 - 1836

    Pennsylvania, Indiana

    February 1836

    07/03/2025