Prince of Fire by Daniel Silva

Enjoyable but the weakest book in the series. The author spends a lot of time giving history lessons rather than focusing on plot. PW Now Allon is back in Venice, when a terrible explosion in Rome leads to a disturbing personal revelation: the existence of a dossier in terrorist hands that strips away his secrets, lays bare his history. Hastily recalled home to Israel, drawn once more into the heart of a service he had once forsaken, Allon finds himself stalking an elusive master terrorist across a landscape drenched with generations of blood, the trail turning on itself until, finally, he can no longer be certain who is stalking whom.