Who Was Amber Costello Before She Became The Key To Rex Heuermann's Arrest?

Amber Costello was twenty-seven, from North Carolina, battling addiction, and living with roommates in West Babylon. Friends described her as generous and funny. Her sister said publicly she forgives Rex Heuermann — and that Amber would have too. And without her case, Heuermann might still be walking free. This look back puts Amber first — her life before the case file — and then traces how the evidence surrounding her disappearance became the key that unlocked the entire Gilgo Beach investigation.

The night before Amber vanished, Heuermann was scammed at her address — her roommate ran a hustle, and he left empty-handed. Then came a text from his burner phone. Then he came back. Amber walked out to meet him. Her roommate Dave Schaller saw the truck — a first-generation Chevrolet Avalanche. That description and that text sat in a file for over a decade until the 2022 task force ran them through registration databases and Heuermann's name surfaced. Surveillance followed. Then the pizza-crust DNA. Then the warrants, the house searches, the planning document, the arrest, and ultimately a guilty plea to eight murders.

The segment also turns the lens inward through psychotherapist Shavaun Scott's examination of the erosion-of-agency pattern — connecting the Heuermann and Richins cases through the same thread: how control doesn't begin with a crisis but with compromises so incremental you don't see the cage being built until you're inside it. Asa Ellerup lived inside that cage for twenty-seven years. Eric Richins saw it clearly and still couldn't leave. Scott turns the conversation toward anyone who recognizes those small concessions in their own life. Heuermann is expected to be sentenced to three consecutive life terms plus an additional hundred years. We revisit where the case stood at the time of our reporting.

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