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Murder of Joan D'Alessandro

SOLVED1997New Jersey, United States2 SOURCESUPDATED JUL 2026
Joan D'Alessandro, the 7-year-old victim (school portrait)
Joan D'Alessandro, the 7-year-old victim (school portrait) — Credit: Copyrighted — editorial use

On April 19, 1973, Joan D'Alessandro, a 7-year-old Girl Scout from New Jersey, was raped and murdered by her neighbor, Joseph McGowan, after she went to his house to sell Girl Scout cookies. McGowan was a high school teacher living in the same neighborhood as the D'Alessandro family.

McGowan was subsequently charged in connection with Joan's death and pleaded guilty to the crime.

The crime had a lasting legislative impact in New Jersey. It led to the passing of "Joan's Law" in 1997. The law was later amended in 2017 to specify that a person convicted of murdering a minor under the age of 18 in the course of committing a sex crime would serve life imprisonment without the possibility of parole.

Following the crime, Joan's mother campaigned to prevent McGowan's parole and also pursued a civil lawsuit against him, continuing her advocacy in the years prior to the passage of Joan's Law. McGowan remained incarcerated for the remainder of his life and died in prison in June 2021. Coverage from northjersey.com in June 2021 addressed matters related to McGowan's time in prison and the "Joan's Law" legacy around the time of his death.

The case has received continued public attention in the years since. It was detailed in the book The Killer Across the Table by former FBI profiler John E. Douglas, and has also been the subject of a documentary film examining the crime and its aftermath.

Key facts

Victims
Joan D'Alessandro
Date
1997
Location
New Jersey, United States
Case status
solved

Case timeline

  1. 1973-04-19

    Joan D'Alessandro, a 7-year-old Girl Scout, is raped and murdered by her neighbor Joseph McGowan after visiting his home to sell cookies.

  2. 1974-06

    Contemporaneous reporting (The New York Times) covers the admission and case developments regarding the killing.

  3. 1997

    "Joan's Law" is passed in New Jersey as a result of the case.

  4. 2017

    Joan's Law is amended to require life imprisonment without parole for the murder of a minor under 18 committed in the course of a sex crime.

  5. 2021-06

    Joseph McGowan dies in prison.

Best coverage

No approved coverage links are attached yet.

People

  • Joan D'Alessandro

    VICTIM

    7-year-old Girl Scout raped and murdered on April 19, 1973, in New Jersey.

  • Joseph McGowan

    CONVICTED

    Neighbor and high school teacher who pled guilty to the rape and murder of Joan D'Alessandro; died in prison in June 2021.

Roles reflect public records and court outcomes at the time of writing — supporting citations are on file under Sources.

Archival records

  • Joan D'Alessandro, the 7-year-old victim (school portrait)

    portrait victim

    Joan D'Alessandro, the 7-year-old victim (school portrait)

    Credit: Copyrighted — editorial use · Source

Places

New Jersey, United States

41.0058, -74.1494

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Common questions

What happened to the victim?
In April 1973, 7-year-old Girl Scout Joan D'Alessandro was raped and murdered in New Jersey by a neighbor, high school teacher Joseph McGowan, after she visited his home to sell cookies. The case led to New Jersey's "Joan's Law."
Where did the murder happen?
New Jersey, United States.
Who was convicted?
Joseph McGowan (Neighbor and high school teacher who pled guilty to the rape and murder of Joan D'Alessandro; died in prison in June 2021.).
What is the current status of the case?
Status: solved.
More cases in New Jersey

Sources

  1. ENCYCLOPEDICMurder of Joan D'AlessandroWikipedia · 2026-07-10
  2. PRESSJoan's Law: D'Alessandro killer Joseph McGowan's letters from prisonnorthjersey.com · 2026-07-10