Detectives Goren and Eames probe the murder of an elderly woman who was poisoned by an anonymous package and set their sights on a crafty forger whose expertise is needed by a local church to verify documents proving the sainthood of 19th-century healer named Brother Jerome. But the investigators uncover a trail of conflicting old letters that could complicate the church's expensive campaign to canonize Jerome -- and they ponder how official sainthood can require a small fortune and human lives.