Gilgo serial killer suspect Rex Heuermann pleads not guilty to 7th murder charge — as lawyers claim he slaughtered victims in his basement Accused Gilgo Beach serial killer Rex Heuermann has been charged with a seventh murder — the November 2000 death of Valerie Mack, according to court documents.

Rex Heuermann to be charged in 7th murder of #ValerieMack #Lisk #Gilgobeach
nypost.com/2024/12/17/u...

Who Is Valerie Mack? Rex Heuermann Charged With Murder of Gilgo Beach Victim

Rex Heuermann was charged with murdering Valerie Mack during a court appearance on Tuesday...

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