The person at the center of this case
Katherine Joy Allen
Missing Person · Open
30 years waiting · since 1996
KATHERINE JOY ALLEN - DENVER, COLORADO
Justice for Katherine Joy Allen — the trail went cold in 1996, but the truth hasn't.
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Key leads to think about
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person
Lead #1What was Katherine's state of mind in the days before her disappearance, and did her history with narcotics play a role in her vanishing?
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witness
Lead #2Who attended or had knowledge of the daughter's graduation event that Katherine planned to attend but never arrived at?
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timeline
Lead #3What specific time on June 12, 1996 was Katherine last confirmed to be seen, and where was she last known to be?
Katherine Joy Allen, a 42-year-old Black woman, disappeared from Denver, Colorado on June 12, 1996, after telling family she planned to attend her daughter's graduation—an event she never reached. Despite initial family contact in the days before her disappearance, she has not been seen or heard from in over 25 years, and the circumstances surrounding her vanishing remain unknown. Her case remains open and unsolved, and investigators continue to seek information from anyone who may have encountered her or have details about her whereabouts.
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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.
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clue
Lead #4Has there been any activity on Katherine's accounts, sightings, or contact attempts in the 25+ 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
June 12, 1996 Denver, Colorado Katherine Joy Allen was known to struggle with narcotics in the past. In the days leading up to her disappearance she had contact with her family, telling them she was planning to attend her daughter's graduation.
The victim did not show up for the graduation, and the family has had no further contact with her.
Timeline of Events
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1996-06-12
Katherine Joy Allen Missing
Katherine Joy Allen disappeared from Denver, Colorado. She had recently told family members she planned to attend her daughter's graduation.
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1996-06-12
Last Contact with Family
Family last had contact with Katherine in the days leading up to her disappearance when she mentioned attending her daughter's graduation.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:June 12, 1996
Last Updated:July 22, 2026
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Case Information
Incident:June 12, 1996
Last Updated:July 22, 2026