The family of accused Gilgo Beach serial killer Rex Heuermann has gotten a helping hand from an unexpected source: The daughter of a notorious jailed murderer.

NEW YORK (AP) — The daughter of accused Gilgo Beach serial killer Rex Heuermann believes he “most likely” committed the infamous killings in New York even as her mother steadfastly defends her ex-husband’s innocence in a new documentary released Tuesday.

The man's daughter believes he's "most likely the Gilgo Beach killer" based on evidence and information in the case, according to the family's attorney.