Gilgo Beach Killer FBI Evaluation

The FBI hopes that studying Heuermann's motivations and methods will provide critical data to help capture other serial killers in the future.

For over ten years, the string of unsolved killings confounded investigators until DNA evidence from a discarded pizza crust linked Heuermann to the crimes.

Families of the victims were present in court for his cold confession, describing the moment as a long-awaited serving of justice.

Heuermann is currently living a solitary life behind bars, where he reportedly receives letters from other notorious criminals.