When Harry Addison gets the call that his brother, Danny, has been killed in a bus explosion in Italy, he rushes to Rome to investigate and to bring the body home. Danny Addison was a priest serving at the Vatican, and Italian authorities believe he was responsible for the assassination of the Cardinal Vicar of Rome -- one of the closest advisors to the Pope. But when Harry recovers the body, it bears only a faint resemblance to Danny. Is his brother still alive? Was he an assassin? Harry must find out -- even if the truth is more terrifying than anything he could have ever imagined.