Gilgo Beach serial killer Rex Heuermann told his ex-wife he killed 7 of the victims in their shared home, documentary says

Rex Heuermann, the man who admitted to killing eight women whose remains were found along Long Island's Gilgo Beach, told his former wife he killed seven of those victims in their Massapequa Park home, a preview of "The Gilgo Beach Killer: House of Secrets" revealed.

Rex Heuermann, the man who admitted to killing eight women whose remains were found along Long Island's Gilgo Beach, told his former wife he killed seven of those victims in their Massapequa Park home, a preview of "The Gilgo Beach Killer: House of Secrets" revealed.

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In a preview of the final episode of the Peacock documentary series about the slayings — which airs Thursday — Heuermann's ex-wife, Asa Ellerup, said he told her he killed eight of the women who were found along Gilgo Beach.

"He said he killed eight women," Ellerup said in the clip. She said there was no hesitation when Heuermann made the admission, but that he was very nervous when they were speaking.