Investigators use metal detectors to search a marsh for the remains of Shannan Gilbert in 2011 in Oak Beach, New York.

Source: https://www.courant.com/2023/07/23/long-island-serial-killer-prime-suspect-in-norwich-womans-murder-2007-disappearance-unsolved-for-16-years/

The sister of Shannan Gilbert, whose disappearance in May 2010 led to the discovery of a string of human remains, also spoke out about the arrest.

Source: https://www.independent.co.uk/news/world/americas/crime/rex-heuermann-gilgo-beach-killers-wife-latest-b2378634.html

While not everyone involved in the case has commented on the docuseries, the family of Shannan Gilbert, who was one of the deceased found along Gilgo Beach, has spoken negatively of the project.

Source: https://www.deseret.com/entertainment/2023/11/29/23981124/long-island-serial-killer-docuseries