Gabriel Allon's idyllic world is once again thrown into turmoil with shocking news from London. The defector and former Russian intelligence officer Grigori Bulganov, who saved Gabriel's life in Moscow, has vanished without a trace. British intelligence is sure he was a double agent all along, but Gabriel knows better. He also knows he made a promise--a promise that leads to a deadly duel of nerve and wits with one of the world's most ruthless men:...

The fatal poisoning of a Russian billionaire sends Gabriel Allon on a dangerous journey across Europe and into the orbit of a musical virtuoso who may hold the key to the truth about his friend's death. The plot Allon uncovers leads to secret channels of money and influence that go to the very heart of Western democracy and threaten the stability of the global order.

Art restorer, assassin, and spy Gabriel Allon finds himself poised to become the chief of Israel's secret intelligence service, but not before answering the French government's request to eliminate the person responsible for detonating a massive bomb in Paris.

It has been six months since Gabriel's showdown with Ivan Kharkov. Now, having severed his ties with the Office, Gabriel has retreated to the Cornish coast with only one thing in mind: healing his wife, Chiara, after her encounter with evil. But an unspeakable act of violence once again draws Gabriel into a world of danger when an art restorer is brutally murdered and the newly discovered Rembrandt on which he is working taken.

Sent to Vienna to discover the truth about a bombing that killed an old friend, art restorer and sometime spy Gabriel Allon is sidetracked by a photograph that turns his world upside-down. Could it really by the face of a man who during the last days of World War II had brutalized his mother on the Death March from Auschwitz? Questions abound when Allon, driven by an intensity he had not felt in years, begins to investigate, discovering in the process...