interesting to revisit the 2011 New York Times' profile of the LISK (this is a gift link, btw)
"He is most likely a white male in his mid-20s to mid-40s. He is married or has a girlfriend. He is well educated and well spoken. He is financially secure, has a job and owns an expensive car or truck. He may have sought treatment at a hospital for poison ivy infection. As part of his job or interests, he has access to, or a stockpile of, burlap sack"
“He has to be persuasive enough and rational enough that he is able to convince these women to meet him on these terms. He has demonstrated social skills. He may even be charming.”
"The summertime disappearances suggest several characteristics. “There may be a seasonal nature to his connection to the area, or to his fantasy and ritual,” Mr. Clemente said. “It may be the time his wife or kids or parents are away for the summer. "
Bright, Careful and Sadistic: Profiling Long Island’s Mystery Serial Killer