The person at the center of this case
Janice Dietz
Missing Person · Open
35 years waiting · since 1991
Missing Person: Janice Dietz
Justice for Janice Dietz — the trail went cold in 1991, but the truth hasn't.
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Key leads to think about
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timeline
Lead #1What happened during the three-day gap between when Janice left McNair on September 10 and when her vehicle was found on September 13?
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location
Lead #2Why was her vehicle abandoned at 4621 Beck? Was it driven there or left by someone else?
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evidence
Lead #3Were there any signs of foul play or distress in or around the abandoned vehicle?
Janice Dietz, a 33-year-old woman, disappeared from St. Louis, Missouri on September 10, 1991, last seen leaving 2702 McNair around 11:00 p.m. Her vehicle was discovered abandoned three days later at 4621 Beck on September 13, 1991, raising questions about what happened in those missing hours. The case remains unsolved and investigators continue seeking information about the circumstances surrounding her disappearance and the location of her vehicle.
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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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witness
Lead #4Did anyone see Janice or her vehicle between September 10-13, or observe activity at the Beck Street location?
Have information about any of these leads?
Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP84771. Missing person: Janice Dietz.
Last known contact: 1991-09-10 in St. Louis, St.
Louis, MO. Circumstances: The missing person was last observed in St.
Louis, Missouri leaving 2702 McNair at approximately 11:00 p.m. on 09-10-1991.
Victim's vehicle was located unoccupied at 4621 Beck on 09-13-1991 at 11:50 p.m. Demographics: 33 years, Female, White / Caucasian.
Physical description: 5 ft 5 in, 111 lbs, hair: Brown, eyes: Brown. Investigating agency: St Louis Metropolitan Police Department | 91-145669 | 1991-09-15.
Timeline of Events
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1991-09-10
23:00Last Observed Leaving 2702 McNair
Janice Dietz was last observed leaving 2702 McNair at approximately 11:00 p.m.
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1991-09-13
23:50Vehicle Located Unoccupied
Victim's vehicle was discovered unoccupied at 4621 Beck at 11:50 p.m.
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1991-09-15
Case Reported to Police
St. Louis Metropolitan Police Department opened case MP84771 (Report #91-145669)
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:September 10, 1991 at 11:00 PM
Last Updated:October 16, 2026
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Any information, no matter how small, could be crucial to solving this case.
Phone: 3142311212
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Case Information
Incident:September 10, 1991 at 11:00 PM
Last Updated:October 16, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 3142311212
You can remain anonymous