The person at the center of this case
Isaac Daniel Seidel
Missing Person · Open
5 years waiting · since 2021
Missing Person: Isaac Daniel Seidel
Justice for Isaac Daniel Seidel — the trail went cold in 2021, but the truth hasn't.
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Key leads to think about
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vehicle
Lead #1Was Seidel actually traveling by bicycle, or did he have access to another vehicle? No vehicle details are documented.
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location
Lead #2What specific areas of Tuscarora State Forest between Blain and Newburg did Seidel frequent? Have these areas been thoroughly searched?
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witness
Lead #3Did anyone see Seidel on September 12, 2021, or in the days following his disappearance in the Blain area or nearby forest?
Isaac Daniel Seidel, a 36-year-old white male, disappeared on September 12, 2021, from his home in Blain, Pennsylvania, possibly while on a bicycle. Unlike his typical hiking trips, Seidel left without arranging care for his pig or notifying his employer, raising concerns that this departure was unplanned. Despite his known affinity for hiking in Tuscarora State Forest, no trace of Seidel has been found in over four years, and investigators continue seeking information about his whereabouts.
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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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clue
Lead #4Why did Seidel leave without caring for his pig or contacting work if this was an unplanned departure? What triggered this sudden departure?
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Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP86758. Missing person: Isaac Daniel Seidel.
Last known contact: 2021-09-12 in Blain, Perry, PA. Circumstances: MISSING: 36YO Isaac D SEIDEL, W/N-M, who has not been seen or heard from since 09/12/2021.
SEIDEL left his home on 09/12/2021 under unknown circumstances, possible on a bicycle. It is not untypical for SEIDEL to pick up and leave for a few days while going hiking or on a ride; however, SEIDEL had not made arrangements for someone to feed his pig, nor has he showed up for work.
These actions are atypical for SEIDEL as he usually tells someone when he isn't going to be home for a few days. SEIDEL likes to hike and roam around in the Tuscarora State Forest between Blain and Newburg, Pennsylvania.
Demographics: 36 years, Male, White / Caucasian. Physical description: 6 ft 0 in, 150 lbs, hair: Brown, eyes: Blue.
Investigating agency: Pennsylvania State Police | PA2021-1263691 | 2021-09-12.
Timeline of Events
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2021-09-12
Isaac Seidel goes missing
36-year-old Isaac Daniel Seidel left his home on September 12, 2021, under unknown circumstances, possibly on a bicycle. He did not arrange care for his pig or notify his employer, which was atypical behavior.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:September 12, 2021
Last Updated:September 27, 2026
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Phone: 7175673110
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Case Information
Incident:September 12, 2021
Last Updated:September 27, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 7175673110
You can remain anonymous