After failing to stop a suicide bomber attack in London, master art restorer and assassin Gabriel Allon is summoned by the CIA and is faced with an organization riddled with dissent--and ill-equipped to deal with the deadly new face of global jihadist terror.

Four months after the deadliest attack on the American homeland since 9/11, terrorists leave a trail of carnage through London's glittering West End. The attack is a brilliant feat of planning and secrecy, but with one loose thread. The thread leads Gabriel Allon and his team of operatives to the south of France and to the gilded doorstep of Jean-Luc Martel and Olivia Watson. A beautiful former British fashion model, Olivia pretends not to know that...