Melissa Barthelemy, Maureen Brainard-Barnes, Amber Lynn Costello and Megan Waterman.
Mandatory Credit:	Suffolk County Police Department via CNN Newsource

Melissa Barthelemy, Maureen Brainard-Barnes, Amber Lynn Costello and Megan Waterman.
Mandatory Credit: Suffolk County Police Department via CNN Newsource

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A timeline of the Gilgo Beach serial killings case and the investigation that led to a suspect

For more than a decade, a string of unsolved killings known as the Gilgo Beach murders terrorized residents and confounded authorities on Long Island’s South Shore after a woman’s 2010 disappearance led investigators to find 10sets of human remains in addition to hers and launched the hunt for a possible serial killer.