The broken family of accused Gilgo Beach murderer Rex Heuermann got a helping hand from one of the few people who could provide it — the daughter of a notorious jailed serial killer. “I know what it’s like to live with a psychopath,

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.