Slightly different tone to this story than previous Gabriel Allon novels, as Allon is drawn into an investigation originated by the Vatican itself. Eventually, the Israeli spy network is pulled in as Allon's investigation leads into the Holy Land, and his attempts to thwart a Hezbollah attack on holy sites in Jerusalem at the same time the Pope is visiting. Pulse-pounding in parts as two major terror plots are interrupted, and I found myself wondering the whole time if Allon was going to royally screw up during each event. Gabriel doesn't seem to be affected personally as much in this one as previous books, but the story is no less enjoyable. Silva belongs in the upper echelon of thriller writers today.