Co-worker: Rex Heuermann once unnerved her by tracking her down on a cruise: “I told you I could find you anywhere”

In May 2010, 23-year-old Shannan Gilbert, an escort, called 911 claiming someone was after her before disappearing near Gilgo Beach, New York. Over the following months, investigators discovered the remains of four other young women, identified as Maureen Brainard-Barnes, Melissa Barthelemy, Megan Waterman, and Amber Costello, all in their 20s and involved in escort work, later termed the “Gilgo Four.” The case remains a haunting mystery linked to Gilbert’s disappearance, prompting ongoing investigations into a potential serial killer.