Investigators use DNA, genetic genealogy to ID another victim of Long Island serial murders

LONG ISLAND, N.Y. — Police on Long Island have added another link in a chain of 11 unsolved Gilgo Beach killings believed to be the work of a serial killer.
Using genetic genealogy, Suffolk County police investigators have identified one of the slain women, initially dubbed “Jane Doe No. 6,” as Valerie Mack, police officials said Thursday. Mack’s identification comes 20 years after she vanished.