Gilgo Beach Serial Killer's Chilling Confession to Ex-Wife Revealed in New Documentary
In a startling revelation from a new documentary series, the convicted Gilgo Beach serial killer, Rex Heuermann, confessed to his ex-wife that he murdered multiple women in the basement of their family home while she was away. This confession adds a deeply personal and horrifying dimension to the case that has shocked the nation.
Ex-Wife's Jail Cell Confrontation with Killer Husband
Asa Ellerup, who finalized her divorce from Heuermann in March 2025 after 27 years of marriage, described the chilling moment in a teaser clip for Peacock's The Gilgo Beach Killer: House of Secrets. During a jail cell meeting, she refused to address him by his first name, instead saying, "So Mr Heuermann, I understand that you are confessing to me on these murders. Can you please tell me how many of these women did you kill?"
Ellerup recounted that Heuermann told her he killed eight women without hesitation, though he was only formally charged with and pleaded guilty to seven murders. When her lawyer questioned who the eighth victim was, Ellerup replied, "I didn't ask." She emphasized that Heuermann assured her she wasn't at their Massapequa home when the killings occurred, which investigators have corroborated.
Gruesome Details of the Killing Spree
Heuermann's killing spree spanned 17 years, from 1993 to 2010, with most victims' bodies discovered in marshes along Long Island's beachfront. During his court appearance on 8 April 2026, he pleaded guilty to seven murders and acknowledged an eighth uncharged killing. He detailed using strangulation to kill each victim, dismembering some and wrapping them in burlap sacking, with hairs found on the burlap helping to link him to the crimes.
The victims include Amber Lynn Costello (27), Megan Waterman (22), Melissa Barthelemy (24), Maureen Brainard-Barnes (25) – known as the "Gilgo Four" – along with Valerie Mack (24), Jessica Taylor (20), Sandra Costilla (28), and the uncharged murder of Karen Vergata (34), who went missing in 1996.
Suburban Facade and Sinister Discoveries
Suffolk County prosecutor Ray Tierney highlighted the duality of Heuermann's life, stating, "He walked among us playacting as a normal suburban dad when all along he was targeting these women for death." Tierney added that Heuermann believed he could silence his victims forever, but "he was wrong."
Investigators searching the Heuermann home uncovered a soundproof vault-like room, hundreds of guns, and detailed plans for the killings, painting a picture of meticulous preparation behind the suburban facade.
Legal Proceedings and Family Impact
Heuermann's attorney, Michael Brown, explained that his client chose to plead guilty to spare the victims' relatives and his own family from the ordeal of a trial. Heuermann is scheduled to be sentenced to multiple life imprisonment terms on 17 June 2026.
Ellerup's lawyer, Bob Macedonio, who also represents her daughter Victoria, released a statement emphasizing the emotional toll on the family. "This has been an extremely emotional and painful process for the family to endure and come to terms with the allegations that Rex Heuermann was the Gilgo Beach serial killer," Macedonio said. He noted that Ellerup wants the focus to remain on the victims and their families, who have suffered "immeasurable and lasting losses."
After the plea hearing, Ellerup expressed her thoughts and prayers for the victims' families and requested privacy during what she called a "very difficult time." The final episode of The Gilgo Beach Killer: House of Secrets, featuring these revelations, is set to air on Peacock, shedding new light on one of America's most notorious serial killer cases.
