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Crime Solvers Central
302 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 (MP14822) and 7 other sources
On May 18, 2012, a 46-year-old man named Dennis Shepherd vanished under deeply concerning circumstances in Brentwood, New York. At the time, he was a patient who had been involuntarily committed to a psychiatric unit and was being transferred from Stony Brook University Medical Center to the Pilgrim Psychiatric Center. Upon arrival at the Brentwood facility at approximately 10:15 a.m., Shepherd managed to jump out of the transport vehicle and fled into the adjacent woods. He was last seen wearing a black t-shirt, light gray or tan pants, and tan sneakers. Described as a white male with blond, spiked hair and blue eyes, standing at 6 feet 2 inches and weighing around 190 pounds, he also has a small scar in the middle of his forehead.

Leading up to his disappearance, Shepherd had been exhibiting signs of severe mental distress, including paranoid delusions that the FBI was conspiring against him. His behavior had become erratic, and at one point, he went door-to-door in a former neighborhood asking to call the United Nations to report this perceived conspiracy. These actions led to his involuntary hospitalization at Stony Brook University Hospital. While in treatment, Shepherd reportedly did not believe he was ill and refused medication. Court records indicate that he had expressed suicidal ideations to his doctors as a means to escape his paranoid thoughts. Despite his vulnerable state, an alert for a missing vulnerable adult was never issued by law enforcement.

In the years following his disappearance, there has been no sign of Dennis Shepherd. His family, left with unanswered questions, filed a $5 million negligence lawsuit against Stony Brook Hospital, alleging a lack of adequate supervision during his transfer. The case remains an active investigation with the Suffolk County Police Department. The circumstances of his disappearance from a place of supposed care, his documented mental health struggles, and the absence of any contact or sightings since that day have left his loved ones in a state of prolonged uncertainty. The overview of the case highlights a man in crisis who disappeared while under institutional care, raising questions about patient transport procedures and the search efforts for vulnerable missing persons.

Last Seen: May 18, 2012

Possible Unidentified Matches (7)

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.

77%Possible
John Doe — Queens, New York - unidentified case UP102635
John Doe — Queens, New York
UP102635 • Found Apr 9, 2023
View case
Sex ✓Male
Age 85%Est. 55–80 vs 46 when missing
Race 100%White
Location 95%30 mi away, same state
TimingFound 11 years after last seen
Height 100%5'11" vs 6'0"–6'2"
Weight 72%237 lb vs 189–191 lb
Hair 50%Brown vs Blond
Eyes 50%Green vs Blue
77%Possible
John Doe — Waterbury, Connecticut
UP94477 • Found Aug 13, 2022
View case
Sex ✓Male
Age 100%Est. 48–62 vs 46 when missing
Race 100%White
Location 88%55 mi away
TimingFound 10 years after last seen
Height 100%5'7"–6'1" vs 6'0"–6'2"
Hair 50%Brown vs Blond
77%Possible
John Doe — New York, New York - unidentified case UP50249
John Doe — New York, New York
UP50249 • Found Apr 24, 2018
View case
Sex ✓Male
Age 85%Est. 45–65 vs 46 when missing
Race 100%White
Location 92%40 mi away, same state
TimingFound 6 years after last seen
Height 84%5'10" vs 6'0"–6'2"
Weight 100%177 lb vs 189–191 lb
Hair 50%Brown vs Blond
77%Possible
John Doe — Brooklyn, New York - unidentified case UP13206
John Doe — Brooklyn, New York
UP13206 • Found Sep 24, 2014
View case
Sex ✓Male
Age 60%Est. 50–90 vs 46 when missing
Race 100%White
Location 93%37 mi away, same state
TimingFound 2 years after last seen
Height 100%5'11" vs 6'0"–6'2"
Weight 100%197 lb vs 189–191 lb
Hair 40%Gray vs Blond
Eyes 100%Blue vs Blue
76%Possible
John Doe — Hollis, New York - unidentified case UP17867
John Doe — Hollis, New York
UP17867 • Found Apr 3, 2018
View case
Sex ✓Male
Age 85%Est. 40–60 vs 46 when missing
Race 100%White
Location 95%28 mi away, same state
TimingFound 6 years after last seen
Height 100%6'2" vs 6'0"–6'2"
Weight 60%245 lb vs 189–191 lb
Hair 50%Brown vs Blond
Eyes 0%Brown vs Blue
76%Possible
John Doe — Brooklyn, New York - unidentified case UP16483
John Doe — Brooklyn, New York
UP16483 • Found May 1, 2013
View case
Sex ✓Male
Age 60%Est. 50–80 vs 46
Race 100%White
Location 93%37 mi away, same state
TimingFound 11 months after last seen
Height 100%6'0" vs 6'0"–6'2"
Weight 100%202 lb vs 189–191 lb
Hair 50%Brown vs Blond
Eyes 30%Hazel vs Blue
76%Possible
John Doe — Philadelphia, Pennsylvania
UP12984 • Found Sep 10, 2014
View case
Sex ✓Male
Age 85%Est. 35–60 vs 46 when missing
Race 100%White
Location 72%116 mi away
TimingFound 2 years after last seen
Height 100%6'1" vs 6'0"–6'2"
Weight 100%189 lb vs 189–191 lb
Hair 50%Brown vs Blond

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.