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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witness
Lead #1Family members last spoke with Katherine in the days before her disappearance—what exactly did she say about her plans and her state of mind?
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location
Lead #2Where was the daughter's graduation scheduled to take place, and did anyone see Katherine that day?
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person
Lead #3Given her history with narcotics, did Katherine have associations or contacts in Denver that might provide leads on her disappearance?
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. She had struggled with narcotics in the past, and despite initial family contact in the days before her disappearance, no one has heard from her since. Nearly three decades later, the case remains unsolved, and investigators seek any information that might explain her whereabouts or what happened to her.
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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 #4Why did Katherine fail to appear for such an important family event after explicitly stating her intention to attend?
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 she was planning to attend her daughter's graduation but did not show up.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:June 12, 1996
Last Updated:September 11, 2026
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Case Information
Incident:June 12, 1996
Last Updated:September 11, 2026