A Kirkus Best Book of the Year, number one New York Times bestseller, number one USA bestseller, and number one WSJ bestseller. From the number one New York Times bestselling author of The Black Widow comes the thrilling new summer blockbuster featuring legendary spy, assassin, and art restorer Gabriel Allon. A heart-stopping tale of suspense, Daniel Silva's runaway bestseller, The Black Widow, was one of 2016's biggest novels. Now, in House of Spies, Gabriel Allon is back and out for revenge, determined to hunt down the world's most dangerous terrorist, a shadowy ISIS mastermind known only as Saladin. 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.