Charges FiledBabylon, NY

Gilgo Beach Serial Killings

#serial-killer#long-island#unsolved#cold-case#sex-workers
Apr 9, 2026
⚠️ Active legal proceedings — details may change

The Gilgo Beach serial killings were part of a series of murders on Long Island, New York, spanning from 1993 to 2011. Many of the victims' remains were found over a period of months in late 2010 and 2011 during a police search of the area along Ocean Parkway, a road near the remote beach town of Gilgo in southern Suffolk County, New York.

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The family matriarch’s defense. A landmark decision in the Gilgo Beach murders case. And a mom hits the road seeking justice.

Dateline NBC · Sep 4, 2025 · 28m

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AUDIO EXTRA: Gilgo Discussion

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Case overview

LocationBabylon, NY
IncidentDecember 11, 2010
StatusCharges Filed
Case typeserial killer
VictimsSandra Costilla, Jessica Taylor, Valerie Mack, Megan Waterman, Maureen Brainard-Barnes, Shannan Gilbert, Amber Lynn Costello, Melissa Barthelemy, Fire Island Jane Doe

Between December 2010 and April 2011, investigators searching for a missing woman along Ocean Parkway on Long Island, New York, found a series of bodies buried in dense brush. [The missing woman they were originally seeking, Shannan Gilbert, was found separately in 2011 and ruled an accidental drowning.](https://www.nytimes.com/2023/07/14/nyregion/gilgo-beach-murders-long-island-suspect.html) The other bodies discovered along the parkway numbered ten in the main cluster; investigators connected at least eleven deaths to the area. Most victims had advertised escort services online and their deaths had gone uninvestigated for years.

The killings remained unsolved for over a decade despite multiple investigative efforts. In 2022, Suffolk County police announced a renewed task force with new forensic tools. [On July 13, 2023, Rex Heuermann, 59, a Manhattan-based architect from Massapequa Park, Long Island, was arrested.](https://apnews.com/article/gilgo-beach-killings-heuermann-arrest-long-island-serial-killer-9ab1bd90bff0d6cf28fe9d3ccb05e8d7) Investigators identified him through cell phone records, DNA from hair recovered from his home's trash that matched victim bindings, and extensive physical surveillance.

[Heuermann was initially charged with the murders of Melissa Barthelemy, Megan Waterman, and Amber Lynn Costello](https://www.nbcnews.com/news/us-news/know-rex-heuermann-identified-gilgo-beach-murders-suspect-rcna94250) — three of the four bodies found together, known as the "Gilgo Four." In 2024, prosecutors added charges in the deaths of Maureen Brainard-Barnes and additional victims as the investigation expanded. [In December 2024, Heuermann was indicted for the murder of Valerie Mack](https://www.cnn.com/2024/12/17/us/gilgo-beach-killings-rex-heuermann-charges/index.html), whose remains had been partially found at Gilgo Beach and partially on Fire Island.

The case represents the longest-running unsolved serial murder investigation in the New York metropolitan area. Investigators have publicly stated they believe there may be additional victims.

Arrest & Charges

[Rex Heuermann was arrested July 13, 2023, in Manhattan.](https://apnews.com/article/gilgo-beach-killings-heuermann-arrest-long-island-serial-killer-9ab1bd90bff0d6cf28fe9d3ccb05e8d7) He was charged in Suffolk County with three counts of first-degree murder (Melissa Barthelemy, Megan Waterman, Amber Lynn Costello). [Additional indictments in 2024 charged him in the murders of Maureen Brainard-Barnes](https://abcnews.go.com/US/gilgo-beach-suspect-rex-heuermann-linked-2-additional/story?id=106958647) and at least two further victims. [In December 2024, a grand jury indicted Heuermann in the murder of Valerie Mack.](https://www.cnn.com/2024/12/17/us/gilgo-beach-killings-rex-heuermann-charges/index.html) Heuermann has pleaded not guilty to all charges.

State Proceedings (Suffolk County Court)

Heuermann's wife filed for divorce following his arrest. Pre-trial hearings have addressed DNA evidence, scope of discovery, and consolidation of multiple indictments. As of March 2026, no trial date has been confirmed. The prosecution has continued to present new indictments as the investigation proceeds.

Current Status

Heuermann is held without bail. Investigators have stated the investigation is ongoing and additional charges are possible. The Shannan Gilbert death remains officially ruled an accidental drowning; her family disputes that finding.

2024

December 17, 2024

Heuermann Indicted for Murder of Valerie Mack

Rex Heuermann was indicted for the 2000 murder of Valerie Mack, who had been identified in 2020 through genetic genealogy. This brought the total number of murder charges against Heuermann to seven.

Source →

June 6, 2024

Heuermann Charged with Two Additional Murders

Rex Heuermann was charged with the murders of Jessica Taylor (disappeared July 2003) and Sandra Costilla (disappeared November 1993). Prosecutors revealed planning documents showing a systematic 'blueprint' for committing and concealing murders.

Source →

January 16, 2024

Heuermann Indicted for Maureen Brainard-Barnes Murder

Rex Heuermann was indicted for the 2007 murder of Maureen Brainard-Barnes, expanding the charges against him to four victims. Prosecutors presented evidence including digital planning documents found on his devices.

Source →
2023

August 4, 2023

Karen Vergata Identified as Fire Island Jane Doe

Karen Vergata, 34, from Manhattan, who went missing on February 14, 1996, was publicly identified as 'Fire Island Jane Doe' through genetic genealogy. Her remains had been found on Fire Island in April 1996 and a matching skull discovered in 2011.

Source →

July 13, 2023

Rex Heuermann Arrested After 13-Year Investigation

Rex Heuermann, 59, a Long Island architect with a Midtown Manhattan office, was arrested and charged with murdering Barthelemy, Waterman, and Costello. DNA from a discarded pizza box matched hair found on victims through genealogical analysis; cell data placed his phone near the dump sites on key dates.

Source →
2020

May 22, 2020

Valerie Mack Identified After 20 Years via Genetic Genealogy

Valerie Mack, 24, a Philadelphia mother who went missing in 2000, was identified through genetic genealogy analysis after being known for two decades as 'Jane Doe No. 6.' Her feet and legs had been found on Fire Island in 1996 and a skull matched in 2011.

Source →
2011

December 13, 2011

Shannan Gilbert's Remains Found in Oak Beach Marsh

Shannan Gilbert's skeletal remains were discovered in a marshy area near where she had disappeared. The medical examiner ruled her death an accidental drowning; her family disputed the finding and believed she was a murder victim. The contested ruling has remained a point of legal controversy.

Source →

May 9, 2011

Jessica Taylor Positively Identified

Jessica Taylor was positively identified through DNA analysis matching torso remains found in Manorville in 2003 with additional remains found along Ocean Parkway in 2011. She had gone missing in July 2003.

Source →

April 4, 2011

More Remains Found

Additional searches revealed six more sets of remains, bringing the total to ten known victims including a toddler.

Source →
2010

December 11, 2010

First Four Victims Discovered Along Ocean Parkway

While searching for Shannan Gilbert, police discovered the remains of four women within approximately one mile of each other: Melissa Barthelemy, Megan Waterman, Amber Lynn Costello, and Maureen Brainard-Barnes — all sex workers who had advertised on Craigslist. Their remains had been placed in burlap and carefully concealed in brush.

Source →

September 2, 2010

Amber Lynn Costello Disappears from West Babylon

Amber Lynn Costello, 27, disappeared from West Babylon, Long Island. She was a sex worker whose remains were discovered in December 2010 among the initial victims found along Ocean Parkway.

Source →

June 6, 2010

Megan Waterman Last Seen in Hauppauge, New York

Megan Waterman, 22, was last seen at a Holiday Inn Express in Hauppauge. She was a sex worker from Maine whose remains were discovered on December 10, 2010, among the Gilgo Four victims along Ocean Parkway.

Source →
2009

July 12, 2009

Melissa Barthelemy Disappears from the Bronx

Melissa Barthelemy, 24, disappeared from the Bronx. She was a sex worker and one of the four core victims connected to the Gilgo Beach serial murders. Her remains were discovered on December 10, 2010, along Ocean Parkway.

Source →
2007

July 9, 2007

Maureen Brainard-Barnes Last Seen in Manhattan

Maureen Brainard-Barnes, 25, was last seen in Manhattan after checking out of a hotel. She was a sex worker who had traveled to meet a client found through Craigslist. Her disappearance would later be linked to Rex Heuermann.

Source →
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Victim
Suspect / Convicted
Unknown Subject
Witness
Investigator
Attorney
Sandra Costilla, Gilgo Beach / Long Island Serial Killer victim, family photo via Newsweek

Sandra Costilla

Victim

Sandra Costilla was a 28-year-old sex worker from Queens, New York whose partial remains were found along Ocean Parkway near Gilgo Beach in November 1993 — predating the 2010 discoveries by nearly two decades. Her case remains separate from the 'Gilgo Four' victims, though investigators have examined whether she was also a victim of Rex Heuermann.

Rex Heuermann, Gilgo Beach serial killer suspect, booking photo

Rex Heuermann

Accused / Charged

Architect charged with murders of 4 Gilgo Beach victims; additional charges added 2024

New York architect arrested in July 2023 as the primary suspect in the Gilgo Beach serial killings. DNA evidence linked him to multiple victims found near Ocean Parkway on Long Island. He has been charged with killing at least four of the so-called Gilgo Four.

Asian Male Doe

Other

Asian Male Doe is an unidentified individual whose remains were discovered during the investigation into the Gilgo Beach serial killings. His identity and life story remain unknown, highlighting the tragedy of unidentified victims in such cases.

Jessica Taylor, Gilgo Beach murder victim

Jessica Taylor

Victim

One of the Gilgo Beach victims whose partial remains were found near Ocean Parkway. Her death is part of the Long Island Serial Killer case; Rex Heuermann has been charged in connection with some of the Gilgo Beach murders but Taylor's case remains under investigation.

Valerie Mack, Gilgo Beach murder victim

Valerie Mack

Victim

Valerie Mack was a young woman with dreams and aspirations, known for her vibrant personality and caring nature. She was a beloved daughter and friend, whose life was tragically cut short.

Megan Waterman, Gilgo Beach murder victim

Megan Waterman

Victim

Megan Waterman was a 22-year-old from South Portland, Maine who was reported missing in June 2010 and whose remains were discovered among the Gilgo Four victims along Ocean Parkway, Babylon, New York in December 2010. She had traveled to Long Island to meet clients she found through adult advertising websites.

Maureen Brainard-Barnes, Gilgo Beach murder victim

Maureen Brainard-Barnes

Victim

Maureen Brainard-Barnes was a 25-year-old from Norwich, Connecticut who disappeared in July 2007 and whose skeletal remains were found along Ocean Parkway, Babylon, New York in December 2010, making her one of the original 'Gilgo Four' victims. A mother of two young children, she had worked as an escort she advertised on Craigslist.

Shannan Gilbert, Gilgo Beach murder victim

Shannan Gilbert

Victim

Shannan Gilbert was a 24-year-old sex worker from New Jersey who disappeared in Oak Beach, Long Island in May 2010 after calling 911 in distress from a client's home, sparking the discovery of the Gilgo Beach serial killings. Police initially focused on her disappearance separately from the other victims, whose remains were found along Ocean Parkway during the search for Gilbert.

Amber Lynn Costello, Gilgo Beach murder victim

Amber Lynn Costello

Victim

Amber Lynn Costello was a 27-year-old from North Babylon, New York who disappeared in September 2010 and whose remains were found along Ocean Parkway, Babylon in December 2010 as part of the Gilgo Four discovery. She had worked as an escort and advertised her services online.

Melissa Barthelemy, Gilgo Beach murder victim

Melissa Barthelemy

Victim

Melissa Barthelemy was a young woman from the Buffalo area who sought a better life in New York City. She was known for her vibrant personality and aspirations beyond her hometown.

Fire Island Jane Doe

Victim

Fire Island Jane Doe is an unidentified female victim whose remains were discovered on Fire Island in 1996. Despite extensive investigations, her identity remains unknown, and she is connected to the Long Island Serial Killer case.

DigitalKey

Burner phone — calls to victims

Investigators identified a burner phone used to contact multiple Gilgo Beach victims before their disappearances. The phone was traced to Rex Heuermann through cell tower data.

theguardian.com
ForensicKey

Heuermann's DNA on burlap

DNA from Heuermann was recovered from hessian burlap used to wrap some of the victims' remains. The DNA matched samples obtained from his pizza crust discarded in Manhattan.

cbsnews.com
ForensicKey

Pizza crust DNA sample

Investigators retrieved a pizza crust discarded by Heuermann outside his Manhattan office. DNA from the crust was matched against DNA found on the victims' remains.

apnews.com
DigitalKey

Search history — victims' names and true crime

Heuermann's devices contained searches for the victims' names, Gilgo Beach news coverage, and true crime content — including searches conducted after arrests were made.

cbsnews.com
DigitalSupporting

Wife's alibi for all three murders

Cell phone records showed Heuermann's wife was out of town during each of the three charged murders — a pattern investigators said was significant to the killer's timeline.

cbsnews.com

AUDIO EXTRA: Gilgo Discussion

Crime Junkie · Nov 1, 2024

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CAPTURED: Gilgo Beach Killer

Crime Junkie · Jul 31, 2023 · 48m

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SERIAL KILLER: L.I.S.K.

Crime Junkie · Jul 1, 2019 · 52m

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The family matriarch’s defense. A landmark decision in the Gilgo Beach murders case. And a mom hits the road seeking justice.

Dateline NBC · Sep 4, 2025 · 28m

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48 Hours: The Gilgo Beach Serial Killings: Rex Heuermann

48 Hours · Jun 18, 2024 · 45h 32m

Watch

48 Hours: The Gilgo Beach Serial Killings

48 Hours · Sep 21, 2023 · 48h 6m

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48 Hours: Investigation of the Gilgo Beach Murders

48 Hours · Jul 14, 2023 · 48h 52m

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48 Hours: The Hunt for the Long Island Serial Killer

48 Hours · Dec 13, 2020 · 45h 50m

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Other

1

Rex Heuermann (Gilgo Beach) — Bail Application

32-page bail application filed in the case of Rex Heuermann, Long Island architect charged with the Gilgo Beach serial murders.

Jul 15, 2023DocumentCloud