The person at the center of this case
Katherine Joy Allen
Missing Person · Open
29 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 had contact 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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clue
Lead #2Why did Katherine not appear at her daughter's graduation, and did anyone see her on or near that date?
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evidence
Lead #3Given her history of narcotics use, were there any known associates or locations she frequented that warrant investigation?
Katherine Joy Allen, a 42-year-old Black female, disappeared on June 12, 1996, from Denver, Colorado, after telling family she planned to attend her daughter's graduation—an event she never attended. She had a history of substance abuse struggles, and despite initial family contact in the days before her disappearance, no further communication has been made. Nearly three decades later, the circumstances of her disappearance remain unknown, and investigators continue to seek information that might explain 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.
📞
contact
Lead #4Has anyone come forward with information about Katherine's whereabouts or activities in the days or weeks following June 12, 1996?
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 told family members she 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:May 19, 2026
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Case Information
Incident:June 12, 1996
Last Updated:May 19, 2026