Daniel Silva's second novel in the Gabriel Allon series finds his main character, art restorer, and sometime spy being asked to visit Zurich, to clean the work of an Old Master for a millionaire banker. But when he arrives he finds the corpse of his client, beneath the masterpiece, and discovers that a secret collection of priceless paintings, stolen by Nazis in the war is missing. With the Swiss authorities trying to pin the murder on Allon and a powerful cabal determined to make sure this wartime secret remains buried, the art restorer, with the help of his late client's daughter Anna,a world famous violinist, set out to find out the truth. The plot is further complicated by presence of an English assassin that he helped to train, who is contracted to kill Anna, to prevent her from helping Allon. This is a unique novel. on the one hand with we have an exciting spy novel with all the trappings one would expect, but on the other, the author has brought the attention of the reader to the role the Swiss authorities played in assisting the Nazis' war machine in WWII. They were in effect the Nazis' bankers, taking in all the gold and other treasures stolen and either hiding them or converting them to liquid assets that would keep the Nazis fighting longer than necessary. A brilliant read!!