Crime Solvers Central
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 (MP74038) and 7 other sources
In the vast and bustling landscape of New York City, a story of quiet disappearance unfolded in the spring of 2020. Mark Allen, a 59-year-old man, was last seen on April 7, 2020, in the South Beach area of Staten Island. His last known location was Richmond University Medical Center, where he had been in the emergency room. In the early hours of the morning, at approximately 1:00 AM, Mark was discharged from the hospital. He was expected to return to his home, but he never arrived. The path he took after leaving the medical facility and his intended destination remain unknown, marking the beginning of a prolonged and painful period of uncertainty for those who know and care for him.

The search for Mark Allen is guided by the few details available about his appearance on the day he went missing. He is a Black / African American man, standing six feet tall and weighing around 200 pounds, with black hair and brown eyes. When he was last seen, he was wearing blue jeans, a blue t-shirt, and shoes of an unknown color or style. These simple articles of clothing are the last tangible connection to his whereabouts, a sparse collection of facts in a case with more questions than answers. The absence of further details or distinguishing features released to the public creates a challenging situation for his loved ones and for the authorities working to find him.

The investigation into Mark Allen's disappearance is being handled by the New York City Police Department's Missing Persons Squad. The circumstances of his case are particularly distressing, centered on the vulnerable moments after a hospital discharge. He seemingly vanished without a trace after seeking medical care, a time when one would expect a return to the safety of home. The overview of this case is one of sudden and unexplained absence. A 59-year-old man left a hospital in Staten Island and was never heard from again, leaving his family to grapple with the profound emptiness and the unending search for answers regarding what happened to him after he walked out into the early morning darkness.

Last Seen: Apr 7, 2020

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.

86%Strong
John Doe — Queens, New York - unidentified case UP71012
John Doe — Queens, New York
UP71012 • Found Apr 10, 2020
View case
Sex ✓Male
Age 100%Est. 55–70 vs 59
Race 100%Black
Location 98%17 mi away, same state
TimingFound 3 days after last seen
Height 84%5'10" vs 6'0"
Weight 86%166 lb vs 200 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
85%Strong
John Doe — Brooklyn, New York - unidentified case UP76881
John Doe — Brooklyn, New York
UP76881 • Found Nov 16, 2020
View case
Sex ✓Male
Age 85%Est. 50–75 vs 59
Race 100%Black
Location 100%9 mi away, same state
TimingFound 7 months after last seen
Height 100%5'11" vs 6'0"
Weight 78%158 lb vs 200 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
84%Moderate
John Doe — New York, New York - unidentified case UP73621
John Doe — New York, New York
UP73621 • Found Sep 7, 2020
View case
Sex ✓Male
Age 85%Est. 45–65 vs 59
Race 100%Black
Location 99%14 mi away, same state
TimingFound 5 months after last seen
Height 84%5'10" vs 6'0"
Weight 99%221 lb vs 200 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
84%Moderate
John Doe — Newark, New Jersey - unidentified case UP156066
John Doe — Newark, New Jersey
UP156066 • Found Nov 23, 2025
View case
Sex ✓Male
Age 100%Est. 58–72 vs 59 when missing
Race 100%Black
Location 100%11 mi away
TimingFound 6 years after last seen
Height 100%6'1" vs 6'0"
Weight 100%183 lb vs 200 lb
Hair 100%Black vs Black
83%Moderate
John Doe — Bronx, New York - unidentified case UP69220
John Doe — Bronx, New York
UP69220 • Found May 9, 2020
View case
Sex ✓Male
Age 85%Est. 45–65 vs 59
Race 100%Black
Location 97%20 mi away, same state
TimingFound 5 weeks after last seen
Height 84%5'10" vs 6'0"
Weight 83%237 lb vs 200 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Bronx, New York - unidentified case UP96243
John Doe — Bronx, New York
UP96243 • Found Dec 6, 2021
View case
Sex ✓Male
Age 69%Est. 35–55 vs 59 when missing
Race 100%Black
Location 97%20 mi away, same state
TimingFound 20 months after last seen
Height 84%5'10" vs 6'0"
Weight 92%172 lb vs 200 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
80%Moderate
John Doe — Brooklyn, New York - unidentified case UP77552
John Doe — Brooklyn, New York
UP77552 • Found Jan 9, 2021
View case
Sex ✓Male
Age 100%Est. 55–70 vs 59
Race 100%Black
Location 100%8 mi away, same state
TimingFound 9 months after last seen
Height 20%5'6" vs 6'0"
Weight 100%186 lb vs 200 lb
Hair 100%Black vs Black
Eyes 100%Brown vs Brown
79%Possible
John Doe — Philadelphia, Pennsylvania
UP95929 • Found Aug 24, 2022
View case
Sex ✓Male
Age 93%Est. 43–58 vs 59 when missing
Race 100%Black
Location 84%68 mi away
TimingFound 2 years after last seen
Height 100%5'9"–5'11" vs 6'0"
Weight 100%190 lb vs 200 lb
Hair 40%Bald vs Black
79%Possible
John Doe — New York, New York - unidentified case UP89681
John Doe — New York, New York
UP89681 • Found Feb 14, 2022
View case
Sex ✓Male
Age 100%Est. 60–75 vs 59 when missing
Race 100%Black
Location 100%11 mi away, same state
TimingFound 22 months after last seen
Height 36%5'7" vs 6'0"
Weight 84%164 lb vs 200 lb
Hair 40%Bald vs Black
Eyes 100%Brown vs Brown
78%Possible
John Doe — Philadelphia, Pennsylvania
UP82417 • Found Jun 10, 2021
View case
Sex ✓Male
Age 85%Est. 50–70 vs 59 when missing
Race 100%Black
Location 84%68 mi away
TimingFound 14 months after last seen
Height 100%6'0"–6'3" vs 6'0"
Weight 35%275–325 lb vs 200 lb
Hair 40%Gray vs Black
Eyes 100%Brown 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.