The Law of Angels — Cassandra Clark

Summer, 1385. The sun is hot and high, promising a fine harvest - but storm-clouds of insurrection are gathering over England. Lollard heretics, driven from their base at Oxford by the iron fist of the Archbishop Courtenay, now roam the land sowing sedition and a return to the bloodshed that swept over the country during the Great Rebellion seems certain. In the capital, the boy king Richard II is now seventeen; his uncle John of Gaunt still refuses to step aside for his ward. Hildegard of Meaux -- sleuth, spy and now an abbess of the powerful Cistercian order -- has found refuge from a world of violence and blood-feud at her new house in Yorkshire.

But by taking a bonded maid into the fold, Hildegard has made a dangerous enemy, an enemy who thinks nothing of destroying her little sanctuary to further his own ends. Meanwhile her own history, and her possession of a priceless relic, threatens to drag her into the schemes of traitors to the crown who seek to overthrow King Richard's regime -- including the ruthless Henry Bolingbroke. And with portents in York that the end of days is imminent; signs expressed by death in fire, can even the resourceful Hildegard unweave the tangled skein of conspiracy?