Forensic analysts recovered a deleted file from Rex Heuermann's basement. According to prosecutors, it's the Long Island Serial Killer's planning document for murder.

The document—titled HK2002-04—was hidden on one of fifty-eight hard drives seized from the Massapequa Park home. Created in 2000, modified through 2002, it allegedly contained eighty-seven details prosecutors say match the methodology used on the Gilgo Beach victims. A "Supplies" section allegedly listed cutting tools, acid, tarps, and cat litter. A "Body Prep" section allegedly stated: "remove head and hands, remove ID marks like tattoos." A "Things to Remember" section contained alleged lessons learned: "Hit harder... light rope broke under stress."

Jessica Taylor's remains were found along Ocean Parkway with her head removed and tattoos mutilated. The document allegedly describes exactly that methodology.

When Suffolk County investigators returned to Rex Heuermann's home, they found infrared evidence of adhesive residue and push pins in the drop ceiling—exactly as allegedly described in the planning document.

DA Ray Tierney stated: "The exact method by which these murders were committed in excruciating detail in that document is in some cases identical to the methodology used to murder the victims."

Now the family that lived under the same roof for twenty-seven years has split. His wife Asa Ellerup still calls Rex her "hero" and refers to him as "my husband" despite their divorce. Their daughter Victoria reached a different conclusion: "most likely" guilty. She spoke with BTK's daughter about what it means to have an alleged serial killer for a father.

According to prosecutors, female hairs found on multiple victims were allegedly consistent with DNA from both women. Neither is accused of involvement—the transfer allegedly came from Rex's clothing or their home.

The daughter saw what the wife cannot.

Rex Heuermann has pleaded not guilty. Trial is September 2026.

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