4 - 4 1/2 star read. The 20th book in Silva's excellent Gabriel Allon series was a very interesting thriller. Gabriel is on holiday in Venice with his family when he gets a call that the Pope has died and he is needed in Rome. His friend Archbishop Donati believes the Pope was murdered and asks Gabriel to investigate. The investigation uncovers a conspiracy to influence the election of the new Pope and change the political persuasions of most of Europe. And there is the problem of the missing book...a book that the Pope had wanted sent to Gabriel before he died. Someone didn't want that book to see the light of die and would kill for it. A very complex and intelligent thriller and an interesting read.