Peter Vronsky

Geo-forensic historian
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Nov 13, 2018
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  • #1
I am an investigative historian and author of 'Sons of Cain: A History of Serial Killers From the Stone Age to the Present' and 'Serial Killers: The Method of Madness of Monsters' and would welcome any input, information or corrections to this series of timelines and geo-forensic map for a string of unsolved murders in New Jersey 1960-1980.

New Jersey Girl Murders 1960-1980
 
  • #2
Peter being a Jersey Girl these have piqued my interest for sure. I am going to have to ask my parents if they remember these from back then, they were both born and raised in Hackensack, and so many of these were right in their age bracket.

Note saw a typo on the website: Mary Ann Della Sala was found April 10, 1967 not 1977.
 
  • #3
Well, you've got my cousin's picture up there. I remember these murders quite well and some things that came after.
 
  • #4
Peter being a Jersey Girl these have piqued my interest for sure. I am going to have to ask my parents if they remember these from back then, they were both born and raised in Hackensack, and so many of these were right in their age bracket.

Note saw a typo on the website: Mary Ann Della Sala was found April 10, 1967 not 1977.
Thanks for finding that typo.
 
  • #5
  • #6
Glad to see three cases listed on the NJ Girl Murders site have been cleared with the confession of Richard Cottingham. Hoping the remain girls will have their cases solved someday.

Cold cases solved: Bergen serial killer confesses to three more deaths

I'm extremely skeptical. No facts are given, nor will they be according to the article. My cousin is one of the cases "cleared" and I'm wondering if the Bergen County Prosecutors Office is only too happy to file these cases away.

I still have clippings when another individual was a prime suspect sought by the police.

I'll have to buy the book on this guy, but until then, color me unconvinced.
 
  • #7
Trident ~ I'm sorry that your family was affected by these terrible murders.
 
  • #8
Re Joan Carol Friedman, the murder at Hoffman-LaRoche in Nutley. The campus is directly off a highway with an entrance/exit right off route 3 and and additional entrance and exit in a very residential area. Easy to get in and out with lax security and once out, easy to blend in with the crowd. Lived very close to there.
 
  • #9
I am an investigative historian and author of 'Sons of Cain: A History of Serial Killers From the Stone Age to the Present' and 'Serial Killers: The Method of Madness of Monsters' and would welcome any input, information or corrections to this series of timelines and geo-forensic map for a string of unsolved murders in New Jersey 1960-1980.

New Jersey Girl Murders 1960-1980
Breaking News: Richard Cottingham has been charged in a twelfth murder - a case that Jennifer Weiss and I coaxed out of him. This one was in Long Island New York, in Nassau County near the border with Queens off the Sunrise Highway. This is the first case back in New York since the three 1979-1980 murders he stood trial for. His recent confessions were all in New Jersey, but Jennifer and I are circling back with Cottingham to Bergen County and several other jurisdictions in New Jersey. And more to come in New York.

 
  • #10
Thanks Peter for all of your work.. I am sure there will definitely be more...
 
  • #11
It has been four years since I posted here. Last time I posted in June 2022 announcing that serial killer Richard Cottingham had been indicted in "a twelfth murder."

As of January 2026, he is now confirmed in twenty murders between 1965 and 1980, with eighty still remaining to be resolved from the approximate 100 he plausibly claims.

I had the privilege and honor to conclusively identify nine Cottingham victims so far in New Jersey and New York (Lorraine Kelly and Mary Ann Pryor had been identified as suspected Cottingham victims prior to my arrival on the scene) and I assisted law enforcement in New Jersey and New York in a total of eleven Cottingham cold case closures between 2021 - 2026, including the oldest cold case closure in American history using perpetrator DNA (as opposed to familial), the 1968 murder of Diane Cusick in Valley Stream, Nassau County, New York, whom I identified as a Cottingham victim in 2021 and which resulted in the first indictment of Cottingham since the 1980s. He pleaded guilty on December 5, 2022, and confessed to an additional four murders in Nassau County from 1972-1973.I have been interviewing Cottingham now for eight years since first sitting down with him in Trenton State Prison in February 2018 with my late investigative partner Jennifer Weiss, who tragically passed away in May 2023.

Much has been learned about Cottingham over the span of those confessions and the data on his MO and signature and closed case information has been aggregated to Torso Serial Killer Project while his suspected cold cases in New Jersey, New York, and New York City are aggregated and mapped on NYNJ PD Cold Case Portal

Cottingham is now 79-years old and in frail health, with at least a dozen re-opened cases under investigation by police from New Jersey and New York, who are not exactly racing the devil to confront and interview him with the exception of a few dedicated detectives from select jurisdictions.
HistoryCott-Murders-MASTER-2026-JAN_2.jpg

victims_Cott2025_resize.jpg
 
Last edited:
  • #12
Amazing work
 

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