Gabriel Allon, the art restorer, spy, and assassin is poised to become the chief of Israel's secret intelligence service. But on the eve of his promotion, events conspire to lure him into the field for one final operation. ISIS has detonated a massive bomb in the Marais district of Paris, and a desperate French government wants Gabriel to eliminate the man responsible before he can strike again.

Allon, now in the British capital, finds himself once more on the front lines of the secret war between East and West, where Russian spies and dissidents engage in the old game of cat and mouse. There, Allon uncovers a much greater conspiracy, a plot by an old enemy to resurrect a network of death, to bring the world to the precipice of a new confrontation. In order to stop it, he must risk everything.

"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.

Legendary art restorer and spy Gabriel Allon joins forces with a brilliant and beautiful master-thief to track down the world's most valuable missing painting but soon finds himself in a desperate race to prevent an unthinkable conflict between Russia and the West. The Carabinieri have made a startling discovery in the Amalfi villa of a murdered South African shipping tycoon: a secret vault containing an empty frame and stretcher matching the dimensions...