Raised a devout Catholic in 12th-century France, Catherine knows that if her family's Jewish roots are exposed, all she loves will be destroyed. When her dear friend Astrolabe, son of Abelard and Heloise, is accused of the murder of a young woman, Catherine risks everything to save him.

Heresy 2007, Tor Books, New York, NY

ISBN-13: 9780765354686

Mass-market paperback

Heresy 2007, St. Martins Press-3pl, New York

ISBN-13: 9780765302472

Trade paperback