Lifetime to re-release the Gilgo Beach killer movie with new info

Thanks to the recent arrest of accused serial killer Rex Heuermann, Lifetime will re-release its true crime movie “The Gilgo Beach Killer” updated with new information.

Airing Aug. 6 at 8 p.m., the movie is part of the network’s  “Ripped from the Headlines” August programming.

Previously titled “The Long Island Serial Killer: A Mother’s Hunt for Justice,” the movie originally aired in February 2021. 

It depicted a fictionalized version of the true story of Mari Gilbert (Kim Delaney), a grieving mother who searched for what happened to her sex-worker daughter Shannan (Katharine Isabelle, “Hannibal”) who vanished after a ‘date’ on Long Island. 

Mari’s dogged pursuit of the truth eventually led to the police uncovering 11 bodies of young women discovered buried in shallow graves along Ocean Parkway in the area of Jones Beach State Park in 2010 and 2011. 

Tragically, Mari Gilbert was stabbed to death by her other daughter in 2016, before she could see Shannan’s killer caught.

Kim Delaney stars in the Lifetime movie.
©Lifetime Television

Kelcey Mawema and Kim Delaney in the Lifetime movie about the Gilgo beach serial killer, hugging.
Kelcey Mawema and Kim Delaney in the Lifetime movie about the Gilgo Beach serial killer.
©Lifetime Television/Courtesy Everett Collection

In the movie’s original synopsis, it said, “Though the search for the killer is still ongoing, Mari’s passionate dedication to giving her daughter and other forgotten women a voice, and the attention they deserve, has kept the case alive with hopes of a breakthrough soon.” 

However, there was a breakthrough in the case on July 14.

Heuermann, 59  –  a New York City architect and married dad of two – was arrested and charged in three of the killings: Megan Waterman, Melissa Barthelemy and Amber Costello. 


Kelcey Mawema and Kim Delaney in the Lifetime movie talking sitting on a beach.
Mawema and Delaney in the Lifetime movie.
©Lifetime Television/Courtesy Everett Collection

He was caught after DNA from the hair of victim Megan Waterman matched his DNA, which investigators took from a discarded pizza crust in January.

Lifetime’s “The Gilgo Beach Killer” will feature new content from executive producer and Emmy Award-winning journalist Deborah Norville, who will provide updated and new details about the case. 

Lifetime did not respond when The Post reached out for comment about what the new information will be. 


Rex A. Heuermann.
Accused killer Rex Heuermann
via REUTERS

Victims Melissa Barthelemy, top left, Amber Costello, top right, Megan Waterman, bottom left, and Maureen Brainard-Barnes.
Victims Melissa Barthelemy (top left), Amber Costello (top right), Megan Waterman (bottom left) and Maureen Brainard-Barnes.
AP

However, there’s plenty of material, including the reactions of the suspected serial killer’s “embarrassed” family and friends. 

“When we initially informed them about their husband, their father, they were shocked,” Suffolk County Police Commissioner Rodney Harrison told CNN. 

“They were disgusted — they were embarrassed. So, if you ask me, I don’t believe they knew about this double life that Mr. Heuermann was living.”


Suspected serial killer Rex Heuermann.
Suspected serial killer Heuermann
Rex Heuermann Consultants & Associates

Police line at a house with police in the background.
Authorities at Heuermann’s home in Massapequa Park, NY.
AP

More sex workers have also come forward alleging that they had encounters with Heuermann, and his “disgusted” wife Asa Ellerup, 59, has filed for divorce. 

Details have also emerged about his behavioral patterns, including stalking and butchering animals.

Actor Billy Baldwin, who is the brother of Alec Baldwin, has also revealed that the accused killer was his former classmate. 

Lifetime’s special airing of “The Gilgo Beach Killer” is slated for Aug. 6 at 8 p.m. 

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