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 (MP37361) and 5 other sources
Mark Hall, a 34-year-old man, was last seen on August 20, 1993, in San Francisco, California. Prior to his disappearance, Hall left a note for his mother expressing suicidal intentions, specifically indicating that he planned to jump from the Golden Gate Bridge. This led authorities to believe that he may have taken his life, although his body was never recovered.

Despite the note, Mark's disappearance remains officially unsolved, and his case is listed in the National Missing and Unidentified Persons System (NamUs). At the time of his disappearance, Hall was described as a Caucasian male with brown hair, standing 5'11" and weighing approximately 160 pounds. His last known location and the contents of the note have led to speculation that he could have become one of the many individuals who have tragically jumped from the iconic bridge, a site known for frequent suicide attempts.

Efforts to locate Mark or confirm his fate have not yielded any significant leads, and his family continues to live with uncertainty. Cases like his underscore the importance of mental health awareness and suicide prevention, particularly in areas like the Golden Gate Bridge, where interventions and barriers have since been installed in efforts to reduce such tragedies.

Last Seen: Aug 20, 1993

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.

84%Moderate
John Doe — Sausalito, California
UP7082 • Found Aug 21, 2007
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Sex ✓Male
Age 100%Est. 25–35 vs 34 when missing
Race 100%White
Location 100%8 mi away, same state
TimingFound 14 years after last seen
Height 100%5'10" vs 5'11"
Weight 100%160 lb vs 160 lb
Hair 100%Brown vs Brown
Eyes 100%Hazel vs Hazel
82%Moderate
John Doe — San Jose, California
UP127425 • Found Jun 14, 1997
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Sex ✓Male
Age 99%Est. 38–52 vs 34 when missing
Race 100%White
Location 89%52 mi away, same state
TimingFound 4 years after last seen
Height 100%5'10" vs 5'11"
Weight 94%139 lb vs 160 lb
Hair 100%Brown vs Brown
81%Moderate
John Doe — Burlingame, California
UP9898 • Found Oct 5, 1995
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Sex ✓Male
Age 100%Est. 33–46 vs 34 when missing
Race 100%White
Location 99%13 mi away, same state
TimingFound 2 years after last seen
Height 52%5'7" vs 5'11"
Weight 98%142 lb vs 160 lb
Hair 100%Brown vs Brown
Eyes 60%Brown vs Hazel
80%Moderate
John Doe — Guerneville, California
UP79380 • Found Jul 18, 1995
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Sex ✓Male
Age 100%Est. 25–35 vs 34 when missing
Race 100%White
Location 86%60 mi away, same state
TimingFound 23 months after last seen
Height 84%5'5"–5'9" vs 5'11"
Hair 100%Brown vs Brown
80%Moderate
John Doe — Forestville, California
UP93104 • Found Dec 31, 1994
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Sex ✓Male
Age 100%Est. 35–45 vs 34 when missing
Race 100%White
Location 88%55 mi away, same state
TimingFound 16 months after last seen
Height 100%5'11"–6'1" vs 5'11"
80%Moderate
John Doe — Palo Alto, California - unidentified case UP127061
John Doe — Palo Alto, California
UP127061 • Found May 23, 1994
View case
Sex ✓Male
Age 85%Est. 30–50 vs 34
Race 100%White
Location 95%29 mi away, same state
TimingFound 9 months after last seen
Height 84%5'7"–5'9" vs 5'11"
Weight 100%157–172 lb vs 160 lb
Hair 60%Black vs Brown
Eyes 60%Brown vs Hazel
80%Moderate
John Doe — Brisbane, California - unidentified case UP12987
John Doe — Brisbane, California
UP12987 • Found Sep 17, 2014
View case
Sex ✓Male
Age 100%Est. 20–35 vs 34 when missing
Race 100%White
Location 100%4 mi away, same state
TimingFound 21 years after last seen
Height 100%6'0" vs 5'11"
Weight 100%175 lb vs 160 lb
80%Moderate
John Doe — Sausalito, California
UP12220 • Found May 15, 2013
View case
Sex ✓Male
Age 100%Est. 45–60 vs 34 when missing
Race 100%White
Location 100%8 mi away, same state
TimingFound 20 years after last seen
Height 100%6'0" vs 5'11"
Weight 95%180 lb vs 160 lb
80%Moderate
John Doe — San Francisco, California
UP5946 • Found Jul 7, 1996
View case
Sex ✓Male
Age 85%Est. 30–50 vs 34 when missing
Race 100%White
Location 100%1 mi away, same county
TimingFound 3 years after last seen
Height 100%5'11" vs 5'11"
Weight 70%200 lb vs 160 lb
79%Possible
John Doe — Milpitas, California - unidentified case UP59937
John Doe — Milpitas, California
UP59937 • Found Sep 29, 2018
View case
Sex ✓Male
Age 100%Est. 55–70 vs 34 when missing
Race 100%White
Location 93%37 mi away, same state
TimingFound 25 years after last seen
Height 100%5'11" vs 5'11"
Weight 61%115 lb vs 160 lb
Hair 70%Gray vs Brown
Eyes 100%Hazel vs Hazel

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.