The person at the center of this case
Katherine Joy Allen
Missing Person · Open / Unsolved
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 #1Why did Katherine miss her daughter's graduation despite telling family she planned to attend? What happened between her last contact with family and the graduation date?
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witness
Lead #2Who was the last person to see or speak with Katherine Joy Allen on or before June 12, 1996?
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clue
Lead #3Given her history with narcotics, could her disappearance be connected to drug-related activities or individuals she may have been involved with?
Katherine Joy Allen, a 42-year-old Black woman, disappeared from Denver, Colorado on June 12, 1996, just before her daughter's graduation—an event she had told family she planned to attend. She had struggled with narcotics in the past, and despite initial family contact in the days before her disappearance, she has not been seen or heard from in nearly three decades. The case remains unsolved, and investigators seek any information about her whereabouts or what happened on the day she vanished.
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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 was the nature and timing of Katherine's final contact with her family in the days before her disappearance?
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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 planned 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:October 21, 2026
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Case Information
Incident:June 12, 1996
Last Updated:October 21, 2026