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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person
Lead #1What was Katherine's relationship with her family, and did anyone see her on the day she disappeared?
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clue
Lead #2Given her history with narcotics, was she in contact with known associates in the days before her disappearance?
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witness
Lead #3Were there any witnesses who saw Katherine in Denver on or around June 12, 1996?
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. Despite having struggled with substance abuse in the past, her sudden absence and complete loss of contact with family members raised serious concerns about her safety. Nearly three decades later, the case remains unsolved, 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.
⏰
timeline
Lead #4What specific time was the graduation scheduled, and did anyone attempt to locate her before reporting her missing?
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 went missing from Denver, Colorado. She had recently told family members 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 event, and family members have had no contact with her since.
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