The person at the center of this case
Katherine Ann Demianczyk
Missing Person · Open
7 years waiting · since 2018
Missing Person: Katherine Ann Demianczyk
Justice for Katherine Ann Demianczyk — the trail went cold in 2018, but the truth hasn't.
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Key leads to think about
👁️
witness
Lead #1What did Katherine's mother observe about her condition or behavior on the day she was last seen?
📞
contact
Lead #2Had Katherine been in contact with anyone else in the days leading up to November 20, 2018?
⏰
timeline
Lead #3What was Katherine's routine and schedule in the weeks before her disappearance?
Katherine Ann Demianczyk, a 25-year-old woman, was last seen by her mother on November 20, 2018, two days before Thanksgiving in Philadelphia. Nearly eight years later, the circumstances of her disappearance remain unclear and no confirmed sightings have been reported. The Philadelphia Police Department continues to seek information from anyone who may have seen Katherine or knows what happened to her.
Case
#2170
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 surveillance camera recordings from the Philadelphia area around November 20, 2018 that might show Katherine's movements?
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 MP73198. Missing person: Katherine Ann Demianczyk.
Last known contact: 2018-11-20 in Philadelphia, Philadelphia, PA. Circumstances: Katie was last seen by her mother two days before Thanksgiving.
Demographics: 25 years, Female, White / Caucasian. Physical description: 5 ft 0 in, 100 lbs, hair: Blond/Strawberry, eyes: Blue.
Investigating agency: Philadelphia Police Department - 24th District (East Division) | 20-02-040490 | 2020-08-31.
Timeline of Events
👁️
2018-11-20
Last Seen by Mother
Katherine Ann Demianczyk was last seen by her mother on November 20, 2018, two days before Thanksgiving in Philadelphia.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:November 20, 2018
Last Updated:June 12, 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:November 20, 2018
Last Updated:June 12, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 2156863093
You can remain anonymous