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Amber Lynn Costello

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Amber Lynn Costello was a victim of the Gilgo Beach serial killer, Rex Heuermann.

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Amber Lynn Costello was one of the women whose deaths are attributed to Rex Heuermann, the alleged Gilgo Beach serial killer. Her case, along with those of other victims, remained unsolved for many years, contributing to the notoriety of the Gilgo Beach killings. Costello's name has resurfaced in the news due to recent developments in the case against Heuermann. Heuermann, who was charged with her murder and the murders of several other women, is reportedly planning to change his plea to guilty at his next court hearing. This development signifies a potential resolution to a long and complex investigation, bringing a measure of closure to the families of the victims, including Amber Lynn Costello. The case highlights the challenges of investigating serial killings and the enduring impact on the victims and their loved ones.
Last updated: May 5, 2026