The death of a notorious London diamond merchant draws aristocratic investigator Sebastian St. Cyr and his new wife Hero into a sordid world of greed, desperation, and the occult, when the husband of Sebastian's former lover Kat Boleyn is accused of the murder . Regency England, September 1812: ?After a long night spent dealing with the tragic death of a former military comrade, a heart-sick Sebastian learns of a new calamity: Russell Yates, the dashing,...