In Amsterdam, a terrorism analyst named Ephraim Rosner lies dead, brutally murdered by a Muslim immigrant. The Amsterdam police believe the killer is a deranged extremist, but others know better. Just twenty-four hours before, Rosner had requested an urgent meeting with Israeli intelligence. Now it is Gabriel Allon's job to find out what Rosner knew, and when he does, it confirms his worst fears: a major terrorist operation is in the works. But not...