In December 2010, police searching along Ocean Parkway near Gilgo Beach, Long Island, New York discovered the remains of four women within a short distance of each other in thick brush and marshland next to the roadway. These four became known as “The Gilgo Four.”

• The remains were badly decomposed and wrapped in materials such as burlap sacks when found by law enforcement officers conducting the search.
• Over the next several months, investigators uncovered additional remains in the Gilgo Beach and broader Long Island area. By March and April 2011, six more sets of human remains had been located along or near Ocean Parkway and nearby sites.
• Some victims’ remains were found scattered across multiple locations, and not all were in the same immediate Gilgo Beach area. Because of this, early investigators were not certain that all the deaths were connected to a single killer.

Conditions of the Crime Scenes

• The initial scene where the Gilgo Four were found was characterized by dense vegetation and brush along a remote stretch of Ocean Parkway, where victims’ bodies were concealed.
• The victims’ remains were in various states of decomposition, consistent with having been exposed to the elements for weeks, months, or years before discovery.
• In several cases, remains were found wrapped in burlap or other materials, suggesting the killer may have used coverings when disposing of bodies.

Victim Locations and Identification Efforts

• The victims’ remains were found along Ocean Parkway and other remote areas, often hidden in brush or marshland rather than directly on the beach itself.
• Law enforcement conducted extensive searches of wooded areas and roadside embankments in 2010 and 2011, using both trained cadaver dogs and officers on foot.
• Over time, forensic efforts including DNA analysis and improved techniques have enabled authorities to identify several of the victims and link some of the remains to a suspect in custody.

Context of Scene Discovery

The discovery of the victims at Gilgo Beach began after the disappearance of Shannan Gilbert in May 2010, which triggered searches of the marshes and roadways near Ocean Parkway. Although her own cause of death has been disputed, her disappearance led investigators to continue searching for additional bodies.

The Gilgo Beach area refers to wooded and marshland along Ocean Parkway on Long Island’s south shore, where the majority of remains were found in late 2010 and early 2011.

Investigators also linked victims whose remains were recovered farther inland, notably in Manorville and wooded parks, indicating disposal in multiple locations over many years.

Melissa Barthelemy

• Discovery Location and Date: Found along Ocean Parkway near Gilgo Beach, December 11 or 12, 2010 with three other victims.
• Forensic Findings: Remains were wrapped in burlap and located with other victims in dense brush alongside the Parkway. Hairs and other trace materials later yielded DNA evidence used in court and linked to the suspect.
• Investigation Contribution: Part of the group called the “Gilgo Four,” which first made authorities suspect a serial killer near Gilgo Beach.

Megan Waterman

• Discovery Location and Date: Also found along Ocean Parkway near Gilgo Beach in the December 2010 cluster.
• Forensic Findings: Remains were discovered in similar conditions to Barthelemy, including wrapping and concealment. DNA analysis later helped connect components of the scene to the suspect.
• Investigation Contribution: Her discovery alongside the others underscored the pattern of multiple bodies dumped in the same remote area.

Amber Lynn Costello

• Discovery Location and Date: Found in the December 2010 Gilgo Beach grouping.
• Forensic Findings: Like the other Gilgo Four, remains were in burlap and brush near the roadside.
• Investigation Contribution: Her remains further confirmed that several bodies were placed in proximity, strengthening suspicion of one killer or related events.

Maureen Brainard-Barnes

• Discovery Location and Date: Found December 2010 near the other three at Gilgo Beach.
• Forensic Findings: Found in a similar pattern, with wrapping and concealment in brush. Advanced DNA analysis later linked suspect Rex Heuermann to this killing.
• Investigation Contribution: Considered part of the original cluster; her case was later used as part of consolidated charges.

Jessica Taylor

• Discovery Location and Date: Partial remains (torso) were found in Manorville, NY, in July 2003. Additional remains were found along Ocean Parkway on March 29, 2011
• Forensic Findings: The torso had plastic sheeting underneath, and some parts were mutilated before disposal. Subsequent remains recovered in 2011 were identified through DNA matching to the torso.
• Investigation Contribution: Taylor’s dismemberment and displaced remains linked separate scenes and suggested a broader disposal pattern extending beyond Gilgo Beach.

Valerie Mack

• Discovery Location and Date: Remains initially found around 2000 near Manorville and later uncovered in searches tied to the Gilgo investigation.
• Forensic Findings: Partial remains were found bound with rope inside a bag wrapped in duct tape. Hair from the bag and remains provided forensic links to the suspect later in the investigation.
• Investigation Contribution: Though older, the case was grouped with others after DNA and forensic analysis connected circumstances to the Gilgo investigation.

Sandra Costilla

• Discovery Location and Date: Found in 1993 in a wooded area in North Sea, Long Island, long before Gilgo Beach victims.
• Forensic Findings: Hair found on her remains later matched the suspect through advanced DNA techniques.
• Investigation Contribution: Costilla’s case extended the timeline of the suspected killer back over a decade, suggesting a longer span of killings.

Other Remains Found Near Gilgo Beach

• Discovery Location and Date: Police found additional remains on March 29 and April 4, 2011, within a couple of miles of the 2010 cluster and along expanded search areas.
• Identified Cases and Forensics: 
• One identified as Karen Vergata, first partially found on Fire Island and later near Tobay Beach, confirmed by genetic genealogy.
• An Asian male wearing women’s clothing, a female African American victim, and a toddler were among the others.
• Investigation Contribution: These remains showed variation in victim profiles and disposal patterns, raising questions about whether all victims were linked to one killer.

Crime Scene and Forensic Patterns

• Several victims were found wrapped in materials such as burlap and plastic, indicating an effort to conceal bodies.

DNA and Trace Evidence

• Advanced DNA analysis played a major role in linking victims to the suspect Rex Heuermann, using innovative techniques including hair comparison and whole genome sequencing.

Geographical Spread

• Victims were found in both roadside marshland near Gilgo Beach and more inland locations, suggesting disposal beyond a single area or over a long time span.

Investigation Evolution

• The discovery of the Gilgo Four in 2010 triggered a major investigation that expanded after more remains were found in 2011.
• Advances in forensic DNA and genetic genealogy have since connected older cases like Costilla and helped identify some previously unidentified remains.