Active Investigation
2010s
Long Island, NY
Unsolved Murder
Official

The Gilgo Beach Murders

Long Island Serial Killings

25 evidence items1 investigatorUnsolved Murder3 boards created

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Case Dossier

Case Brief

Between 2010 and 2011, the remains of multiple victims were discovered along a stretch of beach near Gilgo Beach on Long Island, New York. The case went cold for years until a major arrest in 2023 reignited the investigation. Questions remain about additional victims and whether one suspect acted alone.

Evidence Archive

5

Documents

8

People

5

Locations

2

Timeline Events

3

Notes

Key Figures

Key Locations

Heuermann Residence, Massapequa Park

105 First Avenue, Massapequa Park, New York

Ocean Parkway Discovery Corridor

Ocean Parkway, Gilgo Beach, New York

Oak Beach, Long Island

7 Oak Beach Road, Oak Beach, New York 11702, United States, Oak Beach, New York

Jones Beach State Park Area

585 Bay Parkway, Massapequa, New York 11793, United States, Wantagh, New York

Gilgo Beach Discovery Site

22 Cottage Walk, Oak Beach, New York 11702, United States, Gilgo Beach, New York

Timeline Highlights

Dec 11, 2010

Victim Identification and Discovery Timeline

December 11, 2010: During a search for Shannan Gilbert, a police officer and his cadaver dog discover the first set of remains along Ocean Parkway near Gilgo Beach. Identified as Melissa Barthelemy. December 13, 2010: Three additional sets of remains found within a quarter mile, identified as Megan Waterman, Maureen Brainard-Barnes, and Amber Lynn Costello. March 29, 2011: Remains of a toddler found near Gilgo Beach. March 31, 2011: Partial remains of Jessica Taylor found along Ocean Parkway (her torso had been found in Manorville in 2003). April 4, 2011: Two more sets of remains discovered, bringing the total to eight. April 11, 2011: Tenth set of remains found along Ocean Parkway. December 13, 2011: Shannan Gilbert's remains located in a marsh near Oak Beach, about three miles east of where the Gilgo Four were found.

Feb 1, 2022

Task Force Formation — February 2022

In February 2022, Suffolk County Police Commissioner Rodney Harrison announced the creation of the Gilgo Beach Homicide Investigation Task Force, a dedicated multiagency unit tasked with solving the long-cold serial killings. The task force included full-time investigators from the Suffolk County Police Department, Suffolk County Sheriff's Office, New York State Police, and the FBI. Harrison assigned Detective Lieutenant Kevin Beyrer, a longtime investigator on the Gilgo Beach case, to lead the probe. The task force leveraged advances in DNA technology, cell phone location data, and digital forensics. Within approximately 17 months of formation, the task force identified and arrested Rex Heuermann.

Frequently Asked Questions

What happened in the Gilgo Beach Murders case?
Between 2010 and 2011, the remains of multiple victims were discovered along a stretch of beach near Gilgo Beach on Long Island, New York. The case went cold for years until a major arrest in 2023 reignited the investigation. Questions remain about additional victims and whether one suspect acted alone.
Is the Gilgo Beach Murders case solved?
No, the Gilgo Beach Murders case remains unsolved as of 2026. 1 citizen investigator is actively reviewing 25 pieces of evidence on Coldcase Bureau, including 5 documents and 8 identified persons of interest.
Who are the key people in the Gilgo Beach Murders case?
Key figures in the Gilgo Beach Murders investigation include Rex Heuermann, Megan Waterman, Shannan Gilbert, Melissa Barthelemy, Maureen Brainard-Barnes. The full case archive identifies 8 people connected to the case, with documented relationships, evidence links, and connection maps between individuals.
Where did the Gilgo Beach Murders case take place?
The Gilgo Beach Murders case is primarily associated with Long Island, NY. Key locations include Heuermann Residence, Massapequa Park, Ocean Parkway Discovery Corridor, Oak Beach, Long Island. The evidence archive documents 5 locations connected to the case.
When did the Gilgo Beach Murders case happen?
The Gilgo Beach Murders case dates to the 2010s. The investigation timeline documents 2 key events in chronological order, from the initial incident through the ongoing investigation.
What evidence exists in the Gilgo Beach Murders case?
The Gilgo Beach Murders evidence archive contains 25 pieces of evidence including 5 documents (court filings, police reports, FOIA responses), 8 identified persons, 0 organizations, and 5 mapped locations. All evidence is sourced from publicly available records and organized on interactive investigation boards.
What are the main theories in the Gilgo Beach Murders case?
The Gilgo Beach Murders investigation features multiple competing theories developed by 1 citizen investigators on Coldcase Bureau. Each theory is supported by evidence from the 25-item archive, with investigators creating focused investigation boards to map connections and test hypotheses. Join the investigation to review existing theories or propose your own.
Why hasn't the Gilgo Beach Murders case been solved?
The Gilgo Beach Murders remains one of over 250,000 unsolved cases in the United States. Factors may include limited forensic technology at the time, witness reliability issues, or investigative dead ends. Coldcase Bureau enables citizen investigators to collaboratively review all 25 pieces of archived evidence, identify new connections using interactive investigation boards, and develop theories that traditional investigations may have missed.
How can I help investigate the Gilgo Beach Murders case?
You can join the Gilgo Beach Murders investigation on Coldcase Bureau for free. Browse evidence previews as a Cadet, or subscribe as an Analyst to access the full evidence archive containing 25 items and collaborate with 1 other investigator on interactive evidence boards. You can ask questions, generate investigation boards, map connections between evidence, and contribute your own research.

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