The person at the center of this case
John Mann
Missing Person · Open
28 years waiting · since 1997
Missing Person: John Mann
Justice for John Mann — the trail went cold in 1997, but the truth hasn't.
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Key leads to think about
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person
Lead #1What were the circumstances of John Mann's last contact on December 1, 1997?
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witness
Lead #2Did anyone in Philadelphia see or interact with John Mann around the time of his disappearance?
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timeline
Lead #3Why was there a gap of approximately 3.5 years between the incident date (1997) and the police case filing (2001)?
John Mann, a 35-year-old white male, was last known to have contact on December 1, 1997, in Philadelphia, Pennsylvania. Nearly three decades have passed with no confirmed sightings or resolution, leaving significant questions about his whereabouts and circumstances of disappearance. The Philadelphia Police Department continues to seek information from anyone who may have encountered Mann or have details about his case.
Case
#3486
Philadelphia Police Department - 24th District (East Division)
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
💡
clue
Lead #4Are there any records of John Mann's activities, associates, or reasons he may have left Philadelphia?
Have information about any of these leads?
Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP8568. Missing person: John Mann.
Last known contact: 1997-12-01 in Philadelphia, Philadelphia, PA. Demographics: 35 years, Male, White / Caucasian.
Physical description: 5 ft 7 in, 170 lbs, hair: Brown, eyes: Brown. Investigating agency: Philadelphia Police Department - 24th District (East Division) | 01-08-014906 | 2001-04-05.
Timeline of Events
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1997-12-01
Last Known Contact
John Mann, age 35, was last known to have contact in Philadelphia, Pennsylvania on December 1, 1997.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:December 1, 1997
Last Updated:September 28, 2026
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Any information, no matter how small, could be crucial to solving this case.
Phone: 2156863093
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Case Information
Incident:December 1, 1997
Last Updated:September 28, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 2156863093
You can remain anonymous