The person at the center of this case
Michael Lee Knapstein
Missing Person · Open
5 years waiting · since 2020
Missing Person: Michael Lee Knapstein
Justice for Michael Lee Knapstein — the trail went cold in 2020, but the truth hasn't.
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Key leads to think about
🔍
evidence
Lead #1Why were his wallet and phone left in the vehicle? Does this indicate a medical emergency or foul play?
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location
Lead #2What was his intended destination at the emergency care clinic, and did he enter the facility?
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witness
Lead #3Did anyone at or near the emergency care clinic see Mr. Knapstein or observe his vehicle that morning?
Michael Lee Knapstein, a 59-year-old man, disappeared on July 29, 2020, after leaving his home in Winter Haven, Florida to run errands. His vehicle was found parked at an emergency care clinic with his wallet and phone still inside, raising questions about his sudden disappearance. The case remains open with the Polk County Sheriff's Office, and investigators seek information about his whereabouts and the circumstances surrounding his vanishing.
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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.
💡
clue
Lead #4What errands was he planning to run, and can they help establish his movements that day?
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Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP72284. Missing person: Michael Lee Knapstein.
Last known contact: 2020-07-29 in Winter Haven, Polk, FL. Circumstances: Mr.
Knapstein left his home early in the morning, to run errands, and never returned home. His vehicle was parked at an emergency care clinic.
His wallet and phone were still in the vehicle . Demographics: 59 years, Male, White / Caucasian.
Physical description: 5 ft 10 in, 190 lbs, hair: Gray or Partially Gray, eyes: Green. Investigating agency: Polk County Sheriff's Office | #2020-29449 | 2020-07-30.
Timeline of Events
👤
2020-07-29
early morningMichael Lee Knapstein left home
Mr. Knapstein left his home early in the morning to run errands and never returned home.
📍
2020-07-29
Vehicle discovered at emergency care clinic
His vehicle was found parked at an emergency care clinic with his wallet and phone still inside.
🕵️
2020-07-30
Case reported to authorities
Polk County Sheriff's Office opened case #2020-29449.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:July 29, 2020 at Invalid Date
Last Updated:June 9, 2026
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Any information, no matter how small, could be crucial to solving this case.
Phone: 8632986834
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Case Information
Incident:July 29, 2020 at Invalid Date
Last Updated:June 9, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 8632986834
You can remain anonymous