"Imagine an Agatha Christie mystery set in the late thirteenth century, and you'll have a pretty good picture of this very well executed mystery."—BooklistIt is Spring 1282. England is at war again with Wales. As Baron Hugh of Wynethorpe, a veteran of fighting in Outremer, prepares to join his King's army, he begs his sister, Prioress Eleanor, a favor. On her journey home to Tyndal Prior in Norfolk, she is to carry a gift of rents from the Wynethorpe estates to Mynchen Buckland Priory. The charter for the grant and a private letter are to be given to the Hospitaller nuns' Prioress Amicia, and none other. Eleanor agrees - if Hugh is heading into the Welsh wilderness, then she, Eleanor, will do him this service as well as pray for his protection.When she and her party of Brother Thomas and Sister Anne arrive in cold and rain-sodden Somerset, they receive a chilly welcome. Then the new Prioress at Mynchen Buckland delivers shocking news: Amicia has been imprisoned, convicted of murdering