Ebook: St. Peter's Fair (Brother Cadfael Mystery #4)

When a merchant bound for St. Peter's Fair is found with a slender dagger piercing his heart, Brother Cadfael is on the case. Two murders later, he realizes that no one--least of all the merchant's lovely niece--is safe. "Colorful, convincing details on the workings of a medieval fair".--Kirkus Reviews.