Gilgo Beach serial killer Rex Heuermann’s ex-wife and daughter showed up at his Long Island court day Wednesday — with his adult child breaking down in tears as he admitted he strangled eight women to death.

Former spouse Asa Ellerup, 62, and daughter Victoria Heuermann, 29, listened to the sadistic Massapequa Park patriarch fess to eight slayings over three decades after the loved ones had struggled to believe he was really a cold-blooded killer.

Victoria Heuermann walked into the highly anticipated hearing wearing a sweater with a thick feather snood along with several necklaces – and wiped away tears in the Riverhead courtroom as her father, 62, entered his guilty pleas.

Before she broke down in tears, she sat stone faced while her mother attentively listened to Heuermann’s sickening confessions tied to the murders of Amber Lynn Costello, Megan Waterman, Melissa Barthelemy, Maureen Brainard-Barnes, Valerie Mack, Jessica Taylor, Sandra Costilla and Karen Vergata.

A family lawyer and therapist, as well as a Peacock documentary crew, joined the two family members for the grim day.

Ellerup and Heuermann finalized their divorce in 2025 – though the ex-spouse has consistently questioned if authorities had the right man in Long Island’s most infamous case.  

Ellerup, in the Peacock docu-series last year, said she couldn’t fathom her husband of nearly 30 years was the killer, labeling him a “family man” and her “hero.”

“I know what bad men are capable of doing,” she told the show, which began airing in June 2025. “I’ve seen it, and I’ve heard it from other men. Not my husband. You have the wrong man.”

Victoria also previously said she didn’t know whether her father was capable of the killing and discarding the bodies of the victims along a desolate stretch of beach.  

“Whether or not I believe my dad did it or not, I’m on the fence about that,” she said the docu-series from last year. “Half of me believes he didn’t do it, but at the same time, he could have totally had a double life.”

Heuermann’s stepson, Christopher Sheridan, did not attend the hearing and was instead seen walking the family dog outside their Nassau County home.

Heuermann’s relatives have long denied knowing anything about his grisly crimes and have never been accused of wrongdoing by prosecutors.

“We just heard that Rex Heuermann and Rex Heuermann alone is responsible for these crimes,” said family lawyer Bob Macedonio following the hearing.

“Any suggestion that Asa Ellerup or Victoria Heuermann were involved in any way is irresponsible.”

He called the situation “deeply personal and profoundly painful” to Ellerup and her loved ones.

“[Asa] never wanted to believe the man she was married to for 27 years, the father of Victoria, was capable of committing such heinous acts.”

Ellerup pleaded for privacy as she expressed condolences to the victims and their families.

“Their loss is immeasurable, and the focus should be on them at this time,” she said.

When she was pressed on whether she now saw her ex-husband as a serial killer — and how she didn’t see it years ago — she rushed away as her lawyer erupted at media members. 

Additional reporting by Peter Senzamici