Rex Heuermann stood in a Suffolk County courtroom on April 8 and admitted to killing eight women by strangulation, a methodical spree that stretched from 1993 to 2010 and left victims' remains scattered along desolate stretches of Long Island. The Gilgo Beach serial killer, arrested in April 2023 outside his Manhattan office, now faces three consecutive life sentences with no chance of parole when he is sentenced on June 17.
The guilty plea closed one chapter of a case that had gone cold for more than a decade. But a new Peacock docuseries, produced in partnership with the New York Post, is opening another, one filled with jailhouse confessions, family interviews, and the chilling observations of a retired FBI profiler who believes the full scope of Heuermann's crimes may still be hidden.
What emerges from the series episode titled "The Confession" is a portrait not of a man who snapped once, but of someone who refined a process for killing over nearly two decades, and who, by his own account, described his first murder as something that simply "just happened." What followed was anything but spontaneous.
Heuermann's first acknowledged victim was Sandra Costilla, 28, killed in November 1993 inside his Dodge Ram pickup truck. He was roughly 30 years old. Over the next 17 years, he developed what has been described as a meticulous, four-day killing system, targeting sex workers, strangling them, dismembering several in the basement of his family home in Massapequa Park, and disposing of the remains.
The victims ranged in age from 20 to 34. Their names deserve to be recorded: Amber Lynn Costello, 27. Megan Waterman, 22. Melissa Barthelemy, 24. Maureen Brainard-Barnes, 25. Valerie Mack, 24. Jessica Taylor, 20. Sandra Costilla, 28. And Karen Vergata, 34, whose 1996 killing had not previously been linked to Heuermann until he admitted it this month.
In court, when asked how he killed each woman, Heuermann gave the same answer again and again. Just the News reported that he repeatedly said "strangulation" and also confessed to dismembering the victims and wrapping them in burlap. Prosecutors said the killings took place in the basement of his home.
Costilla was killed three years before Heuermann married Asa Ellerup. Vergata was killed in 1996, while Ellerup was in Sweden planning their wedding. The killings continued until his daughter, Victoria Heuermann, was 13 years old.
Victoria Heuermann spoke to producers of the Peacock series about conversations she had with her father. Her account paints a man who acknowledged something was deeply wrong with him, but who framed it in terms designed to minimize his own agency.
"He said that his demons got to him. When he was in a certain opportunity or there was a certain catalyst in front of him, that would start to create these dark urges. There was a sickness."
Victoria Heuermann told producers she asked her father directly whether he saw his victims as someone's daughter. His response was blunt and devoid of remorse.
"He told me he didn't even see them as human."
That statement alone tells you more about the nature of this case than any clinical label could. Eight women, daughters, in fact, reduced to objects by a man who lived an outwardly ordinary suburban life while carrying out acts of extraordinary depravity in his own basement. It is a reminder that the most disturbing crimes often hide behind the most unremarkable facades.
Alison Winter, a veteran psychotherapist, was brought into the case by Robert Macedonio, the attorney for Heuermann's ex-wife, to counsel the family. She ended up conducting jailhouse interviews with Heuermann himself, and her observations form a central thread of the docuseries.
Winter described how Heuermann traced the origins of his compulsions back to late high school:
"Rex, in later high school, shares with me [that] he starts having thoughts that he knew they were unhealthy. He did not know what they were per se. He did not know how violent they were. But he knew his thinking wasn't right."
From there, Winter said, Heuermann turned to pornography and books on death. He became fascinated with dissecting a human body.
"And the sex and the pornography and the human body and all of that, in a mind that's not healthy is a very dangerous recipe."
Winter also relayed that Heuermann told her he eventually stopped killing because he was no longer getting an adrenaline rush from it. That claim, that a serial killer simply lost interest, deserves skepticism, particularly given what a retired FBI profiler had to say about the case.
John Douglas, the retired FBI agent and profiler who authored "Mind Hunter," sat down with Winter for the series and offered a far grimmer assessment. Douglas did not accept the idea that Heuermann's violence was confined to the eight admitted killings.
"It's the violence that really turns him on. He put these victims through h***. It wasn't a swift kill. It didn't have to be a swift kill because no one was home. No one could hear the screams and yells coming from his cellar."
Douglas called Heuermann "a malignant, narcissistic, sadistic psychopathic serial killer" and said flatly that had he not been caught, he would have killed again. But the profiler went further, questioning the timeline itself.
"I don't believe he started killing at 30. There may be cases that he does not want to admit to because in those states, like where he has a house, I believe, in South Carolina, they got the death penalty and they use it."
Police in the Carolinas have investigated possible links between Heuermann and women reported missing in their jurisdictions, but no additional charges have been filed. Douglas's observation raises a question that law enforcement has not publicly answered: did Heuermann's guilty plea cover the full extent of his crimes, or only the ones where a life sentence, rather than a death sentence, was the worst possible outcome?
It is a question that haunts many serious homicide cases, the gap between what the justice system can prove and what the accused actually did.
Asa Ellerup, Heuermann's ex-wife, has emerged as one of the most unsettling figures in the case, not as a suspect, but as someone who lived for decades in a house where, she now says, her husband admitted to dismembering bodies. Fox News reported that Ellerup said Heuermann privately confessed his crimes to her before the guilty plea, telling her he killed seven of his eight known victims in the basement of their Massapequa Park home while she was away.
In the docuseries, Ellerup described the moment she learned the number. AP News reported her account of asking Heuermann how many women he killed. His answer: "He said, 'Eight.'"
Ellerup also said that when Heuermann began talking, "it started feeling like that's the Rex I know." She told producers she wanted to understand why he killed these women and what his triggers were.
She now lives in the same house. In the same basement.
Heuermann was not arrested until April 2023, nearly 30 years after his first admitted killing and 13 years after his last. He was initially charged with three of the cold-case killings. The remaining charges were added later, thanks to DNA testing that linked him to additional victims.
For the better part of two decades, a man who operated what has been described as a four-day killing system lived openly in suburban Long Island, commuted to a Manhattan office, raised a family, and evaded detection. The women he targeted, sex workers, often marginalized, often invisible to the institutions that should have protected them, did not receive the investigative urgency that other victims might have.
That is not an indictment of any single officer or agency. It is an observation about how the system works when the victims are people society has already decided not to see. The same pattern repeats in communities where violence claims lives that never make the front page.
Heuermann's sentencing on June 17 will deliver three consecutive life terms without the possibility of parole. For the families of the eight women he killed, that date will mark the end of a legal process, but not the end of their grief.
And if John Douglas is right, it may not mark the end of the investigation, either. Somewhere in the Carolinas, or elsewhere, there may be families still waiting for answers that Rex Heuermann has calculated it is too dangerous to give.
The Gilgo Beach case stands as one of the most prolonged failures of accountability in modern American criminal history. A man confessed to eight killings spanning 17 years. He described a system. He named a motive, "dark urges" and a "sickness." He told his own daughter he did not see his victims as human. And yet for three decades, he walked free.
The victims in this case were real people with real names. They were someone's daughters. The fact that their killer could operate for so long without consequence is not a mystery. It is a familiar failure, one rooted in who society chooses to protect and who it chooses to overlook.
Rex Heuermann will spend the rest of his life in prison. That is the minimum that justice demands. Whether it is the maximum that the truth requires remains an open question, one that law enforcement at every level should feel obligated to answer.
Eight women are dead. A killer confessed. And the only honest thing left to say is that none of it should have taken this long.