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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timeline
Lead #1What were the exact circumstances and location where Katherine was last seen before failing to appear at the graduation?
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witness
Lead #2Did anyone in the family or social circle have contact with Katherine on June 12, 1996, or observe anything unusual in her behavior in the days leading up to her disappearance?
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evidence
Lead #3Given her history of narcotics use, was there evidence of drug activity or involvement with individuals in that community around the time of her disappearance?
Katherine Joy Allen, a 42-year-old Black female, disappeared from Denver, Colorado on June 12, 1996, after telling family she planned to attend her daughter's graduation—an event she never reached. She had a history of substance abuse struggles, and despite initial family contact in the days before her disappearance, no trace of her has been found in nearly three decades. The case remains unsolved, and investigators continue seeking information that might explain her whereabouts or fate.
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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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contact
Lead #4What specific communications did Katherine have with family members in the days before June 12, and did she mention meeting anyone or going to any particular location?
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 disappears
Katherine Joy Allen disappeared from Denver, Colorado. She had told family members in the days prior that she planned to attend her daughter's graduation.
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1996-06-12
Failed to appear at daughter's graduation
The victim did not show up for her daughter's graduation ceremony, and family has had no further contact with her since.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:June 12, 1996
Last Updated:June 7, 2026
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Case Information
Incident:June 12, 1996
Last Updated:June 7, 2026