Legendary spy and art restorer Gabriel Allon has at long last severed ties with Israeli intelligence and settled quietly in Venice. His beautiful wife, Chiara, has taken over the day-to-day management of the Tiepolo Restoration Company, and their two young children are discreetly enrolled in a neighborhood scuola elementare. For his part, Gabriel spends his days wandering the streets and canals of the watery city, bidding farewell to the demons of his tragic, violent past. But when the eccentric London art dealer Julian Isherwood asks Gabriel to investigate the circumstances surrounding the rediscovery and lucrative sale of a centuries-old painting, he is drawn into a deadly game of cat and mouse where nothing is as it seems.