Absolution By Murder by Peter Tremayne

Peter Tremayne is the pseudonym for Peter Berresford Ellis, a well-respected authority on the ancient Celts. He is the author of over twenty books, including The Dictionary of Celtic Mythology, The Celtic Dawn: A History of Pan Celticism, and The Druids. Valley of the Shadow is the sixth Sister Fidelma mystery. Tremayne lives in London, England.