Isaac Daniel Seidel, 36, was last seen on September 12, 2021, from his home in Blain, Pennsylvania. An MIT-trained mechanical engineer who enjoyed hiking and bicycling, Isaac often explored the nearby Tuscarora State Forest. His family grew alarmed when he missed work, made no arrangements for his pet pig, and did not return for days.

When loved ones checked his home they found chicken thawing in the sink and most belongings in place, but Isaac’s phone, backpack, and his dark green Cannondale bicycle were missing. Family searches of roadsides, ravines, and later organized parties and drone searches in Tuscarora State Forest turned up no trace. The Pennsylvania State Police opened an investigation, and the family has offered a cash reward while asking the public for tips.

The picture painted by those who knew him is of a well-liked, thoughtful man with no known enemies. The key unanswered question remains where he went on that bike ride and why there has been no sign of him since September 12, 2021. If anyone knew Isaac’s routes, recent plans, or saw him around Blain or the Tuscarora State Forest that day, please come forward with information.