Adelia Aguilar series

Four savage murders . . . an elusive killer . . . and one extraordinary woman who can reveal the secrets of the dead.
In medieval Cambridge, four children have been murdered. The Catholic townsfolk blame their Jewish neighbors, so to save them from the rioting mob, the Cambridge Jews are placed under the protection of the king. Hoping scientific investigation will help catch the true killer, King Henry II calls on his cousin, the King of Sicily–whose...

The "richly detailed, almost indecently thrilling" (New York Times) follow up to The Serpent's Tale
When a fire at Glastonbury Abbey reveals two skeletons, rumor has it they may belong to King Arthur and Queen Guinevere. King Henry II hopes so, for it would help him put down a rebellion in Wales, where the legend of Celtic savior Arthur is strong. To make certain, he sends Adelia Aguilar, his Mistress of the Art of Death,...