For years, the women whose bodies were found along Long Island's barrier beaches were treated as isolated tragedies — separate cases, separate detectives, separate griefs. It took more than two decades to understand they were the work of the same man.
On April 8, 2026, Rex Albert Heuermann pleaded guilty to seven murders. An eighth victim — Karen Vergata, who vanished in February 1996 — was formally admitted as part of the plea. His sentencing is June 17, 2026, in Suffolk County Court, Riverhead, New York.
This is who he was. This is how they caught him. And this is what the victims' families are living with.
The Timeline
- February 1996: Karen Vergata disappears on Fire Island at age 37. She won't be formally identified for nearly three decades.
- November 1993: Sandra Costilla, 28, from Trinidad and Tobago, is killed. Her remains found in 2004 but she isn't connected to the case until 2024.
- 1996–2001: Valerie Mack dies. Her remains found in 2000 in Southold, New York; she isn't identified until 2021. She was 24.
- May 2007: Maureen Brainard-Barnes, 24, disappears in Manhattan, last seen heading to Long Island. Her body found near Gilgo Beach in December 2010.
- October 2003: Jessica Taylor, 20, disappears near Kings Park, New York. Her remains found in 2004, then again in 2011.
- July 2009: Melissa Barthelemy, 22, disappears in Manhattan. Her body found in December 2009 near Gilgo Beach.
- June 2010: Megan Waterman, 22, disappears. Her body found in December 2010 near Gilgo Beach.
- September 2010: Amber Costello, 27, disappears. Her body found December 2010.
- July 13, 2023: Heuermann arrested at his Massapequa Park home.
- April 8, 2026: Heuermann pleads guilty to seven counts of murder. Karen Vergata admitted as 8th victim. Three additional charges dismissed in exchange for FBI cooperation.
- June 17, 2026: Sentencing.
From arrest to plea: 1,000 days.
The 8th Victim: Karen Vergata
Karen Vergata was 37 when she vanished from Fire Island in February 1996. For years, she was known only as "Fire Island Jane Doe" — her remains recovered in 1996 but her identity unknown until 2023, when DNA genealogy matched her to a living family member.
She was not in the original 2023 indictment. Her name came up because the investigation, having narrowed to Heuermann, checked his history against cold case evidence. What they found was enough to satisfy prosecutors — but not enough, under the plea agreement, to bring additional charges.
That makes her admission unusual. In most guilty plea scenarios, a defendant does not publicly acknowledge an additional victim. That Heuermann did this — in open court, as part of a deal that cleared three other charges — is a fact that victim advocates have noted. It is not a fact that closes anything.
How He Was Caught
The breakthrough came through DNA genealogy — the same method that solved dozens of cold cases in the 2010s. Investigators built a genetic profile from the crime scene evidence, then uploaded it to a public genealogy database. The initial search produced partial matches to family trees. Investigators worked backward from those trees, narrowing candidates through a process that took months.
Heuermann was not in any law enforcement database. He had no prior criminal record. He was, by external appearances, a functioning professional: a Manhattan architect with a regular life and a house in Massapequa Park.
The DNA was the thread. Surveillance video was the confirmation.
Investigators matched Heuermann to old surveillance footage showing a man near where victims disappeared. His car appeared in footage recorded near the time of known disappearances. His physical characteristics matched descriptions from the few witnesses who had come forward over the years.
His ex-wife provided additional corroborating testimony. Her account of what she observed during the years of their marriage became part of the case — and, by the time of the plea, was on record as cooperating witness testimony.
Who the Victims Were
Most of Heuermann's confirmed victims were women who worked in the sex industry. Several were from out of town — traveling to Long Island for work, or drifting between circumstances that left them less connected to family networks that typically drive missing persons reports.
The Gilgo Beach area — the stretch of barrier islands off Long Island's south shore — had been known for bodies washing ashore since the 1990s. The cases were investigated separately for years. The connection between them — and the reason they stayed open — was in part a function of the type of victim involved. Tip lines ran quieter. Media cycles moved faster. The investigative resources that follow a college student or a suburban mother did not automatically follow a woman who had been arrested for prostitution.
This is documented in decades of cold case research and victim advocacy reporting. And it is the context that makes the Heuermann case a policy question, not just a crime story.
What Happens on June 17
Heuermann will be sentenced to three consecutive life terms without parole, plus up to 100 years. That is the prosecution's position. That is what the plea agreement sets up. He will almost certainly receive it.
The question is whether anything emerges from his FBI cooperation — whether the Behavioral Analysis Unit's conversations with him surface information about other victims, other locations, other periods that the formal record has not captured.
Read the full sentencing preview: "What to Watch For at Heuermann's Sentencing" → /blog/heuermann-sentencing-preview
This post is part of our Rex Heuermann coverage series. See the sentencing countdown → /blog/heuermann-sentencing-countdown