Crime Solvers Central
Crime Solvers Central
298 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP4592) and 7 other sources
In the autumn of 1979, a 16-year-old girl named Karen Lynn Zendrosky vanished, leaving her family and community with decades of unanswered questions. She was last seen on the evening of October 23, 1979, at the now-defunct Whitehorse Bowling Alley in Bordentown Township, New Jersey. At the time of her disappearance, she was described as being 5'2' to 5'3' tall and weighing around 97 pounds, with brown hair and green eyes. She had a scar on her right ear from a previously implanted plastic shield and had also broken her lower right arm at some point. When she was last seen, Karen was wearing overalls and a brown and yellow zip-up sweatshirt. Her parents reported her missing shortly after she failed to return home, sparking a case that would remain unsolved for many years.

From the outset, law enforcement suspected foul play in Karen's disappearance, and the case is being investigated as a homicide. Rumors quickly spread that she might have gone to a nearby lagoon, a known party spot, with two or three men who were in their early twenties. It has never been confirmed whether she went with them willingly or was taken against her will. This lagoon was situated near a wastewater treatment plant in Hamilton, and about seven years after she vanished, police began to receive tips suggesting that Karen had been killed in the woods near the lagoon and her body disposed of in a sludge pit at the facility. These rumors also included the names of several young men from Hamilton who were considered potential suspects.

Over the years, investigators have pursued various leads, including questioning several suspects. The theory that Karen's remains were in the sludge pit gained enough traction that in 2005, authorities decided to conduct a search of the area. Using ground-penetrating radar, they identified spots that were consistent with the presence of organic matter, such as human remains. This led to a three-day excavation of the pit, but despite the promising technology and the hopes of providing closure to Karen's family, nothing was found. The New Jersey State Police have maintained that they intend to prosecute if sufficient evidence is ever located. The disappearance of Karen Zendrosky is a case marked by persistent rumors and a lack of concrete evidence, leaving a family without their daughter and a community still searching for the truth of what happened on that October night.

Last Seen: Oct 22, 1979

Possible Unidentified Matches (10)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

80%Moderate
Jane Doe — Lacey Township, New Jersey
UP100328 • Found Feb 6, 1981
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Sex ✓Female
Age 92%Est. 18–25 vs 16 when missing
Race 100%White
Location 95%30 mi away, same state
TimingFound 16 months after last seen
Height 100%5'0"–5'3" vs 5'2"
78%Possible
Jane Doe — Manhattan, New York - unidentified case UP125402
Jane Doe — Manhattan, New York
UP125402 • Found Dec 2, 1979
View case
Sex ✓Female
Age 100%Est. 16–25 vs 16
Race 100%White
Location 88%54 mi away
TimingFound 6 weeks after last seen
Height 55%4'6"–5'6" vs 5'2"
Weight 100%90–110 lb vs 97 lb
78%Possible
Jane Doe — New York, New York - unidentified case UP6124
Jane Doe — New York, New York
UP6124 • Found May 8, 1999
View case
Sex ✓Female
Age 100%Est. 25–35 vs 16 when missing
Race 100%White
Location 89%52 mi away
TimingFound 20 years after last seen
Height 100%5'3" vs 5'2"
Weight 59%125 lb vs 97 lb
Hair 100%Brown vs Brown
78%Possible
Jane Doe — Staten Island, New York - unidentified case UP6955
Jane Doe — Staten Island, New York
UP6955 • Found Sep 6, 1989
View case
Sex ✓Female
Age 100%Est. 18–30 vs 16 when missing
Race 100%White
Location 92%39 mi away
TimingFound 10 years after last seen
Height 84%5'4" vs 5'2"
Weight 93%110 lb vs 97 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Green
77%Possible
Jane Doe — New York, New York - unidentified case UP14585
Jane Doe — New York, New York
UP14585 • Found Sep 30, 2014
View case
Sex ✓Female
Age 100%Est. 25–35 vs 16 when missing
Race 100%White
Location 88%55 mi away
TimingFound 35 years after last seen
Height 100%5'3" vs 5'2"
Weight 79%117 lb vs 97 lb
Hair 100%Brown vs Brown
77%Possible
Jane Doe — Brielle, New Jersey - unidentified case UP2274
Jane Doe — Brielle, New Jersey
UP2274 • Found Jun 15, 2008
View case
Sex ✓Female
Age 100%Est. 18–30 vs 16 when missing
Race 100%White
Location 93%35 mi away, same state
TimingFound 29 years after last seen
Height 84%5'4" vs 5'2"
Weight 65%123 lb vs 97 lb
Hair 100%Brown vs Brown
Eyes 70%Hazel vs Green
77%Possible
Jane Doe — Brooklyn, New York - unidentified case UP2771
Jane Doe — Brooklyn, New York
UP2771 • Found Apr 7, 2004
View case
Sex ✓Female
Age 100%Est. 40–55 vs 16 when missing
Race 100%White
Location 88%53 mi away
TimingFound 24 years after last seen
Height 100%5'1" vs 5'2"
Weight 100%96 lb vs 97 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Green
77%Possible
Jane Doe — Brooklyn, New York - unidentified case UP6805
Jane Doe — Brooklyn, New York
UP6805 • Found May 10, 1997
View case
Sex ✓Female
Age 100%Est. 16–25 vs 16 when missing
Race 100%White
Location 88%53 mi away
TimingFound 18 years after last seen
Height 100%5'2" vs 5'2"
Weight 83%115 lb vs 97 lb
Hair 100%Brown vs Brown
Eyes 0%Brown vs Green
77%Possible
Jane Doe — Brooklyn, New York - unidentified case UP8125
Jane Doe — Brooklyn, New York
UP8125 • Found Apr 8, 1990
View case
Sex ✓Female
Age 85%Est. 20–40 vs 16 when missing
Race 100%White
Location 89%51 mi away
TimingFound 10 years after last seen
Height 100%5'1" vs 5'2"
Weight 100%105 lb vs 97 lb
Hair 60%Black vs Brown
76%Possible
Jane Doe — Philadelphia, Pennsylvania
UP122455 • Found Mar 31, 1991
View case
Sex ✓Female
Age 74%Est. 30–39 vs 16 when missing
Race 100%White
Location 96%27 mi away
TimingFound 11 years after last seen
Height 100%5'0"–5'2" vs 5'2"
Weight 83%115–140 lb vs 97 lb
Hair 70%Gray vs Brown

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.