Finished 5/24/09:

THE SERPENT'S TALE by Ariana Franklin, 2008.

Second in the series of novels about Vesuvia Adelia Aguilar, the mistress of the art of death, this time concerning the poisoning of Rosamund Clifford, mistress of Henry II. Adelia is drawn into the mystery by her lover Bishop Rowley, and it falls to her to discover the culprit. Was it Eleanor of Aquitaine, Henry's queen, or someone she hired to do the deed? Or someone else? Snowstorms, assorted odd characters all trapped and isolated inside Godstow Abbey, more murders, spies, and intrigue, make for a bizarre and thrilling story.