Material Witness (Shipshewana Amish Mystery #3)
Vannetta Chapman

This time it's a madman loose in the largest crowd of the year, and he's looking for something or someone. If they can't figure out what, one of Deborah and Callie's close circle of friends may be next.
Masked identities, antique quilts with hidden messages, an Amish boy whose handicap makes him stronger, one brave dog, and a possible hidden treasure ... this time it's nonstop action, danger, and a dash of romance.