A long-buried family secret has come back to haunt Special Agent Aloysius Pendergast. It begins with murder. One of Pendergast's most implacable, most feared enemies is found on his doorstep, dead. Pendergast has no idea who is responsible for the killing, or why the body was brought to his home. The mystery has all the hallmarks of the perfect crime, save for an enigmatic clue: a piece of turquoise lodged in the stomach of the deceased. The gem leads...