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
👤
person
Lead #1What were the circumstances of Katie's disappearance and why was she last seen by her mother?
👁️
witness
Lead #2Has her mother or anyone else provided details about Katie's mental state, plans, or relationships at the time?
💡
clue
Lead #3Were there any signs of foul play, voluntary departure, or other indicators in the initial investigation?
Katherine Ann Demianczyk, a 25-year-old woman, disappeared in Philadelphia on November 20, 2018, just days before Thanksgiving after last being seen by her mother. Nearly eight years later, the circumstances surrounding her disappearance remain unclear, with no confirmed sightings or resolution. The Philadelphia Police Department's Special Victims Unit continues to investigate, and anyone with information about Katie's whereabouts is urged to come forward.
Case
#2170
Philadelphia Police Department - Special Victims Unit
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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.
🔍
evidence
Lead #4What investigative steps has the Special Victims Unit taken in the nearly eight years since her disappearance?
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 - Special Victims Unit | 20-02-040490 | 2020-08-31.
Timeline of Events
👁️
2018-11-20
Last Seen
Katherine Ann Demianczyk was last seen by her mother in Philadelphia, two days before Thanksgiving
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:November 20, 2018
Last Updated:September 27, 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:September 27, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 2156863093
You can remain anonymous