It begins at an exclusive private school in Geneva, where a beautiful student of mysterious origins disappears one day after being picked up by her security detail. She is the daughter of Khalid bin Mohammed, the much-maligned crown prince of Saudi Arabia. KBM, as he is known to much of the world, turns to an unlikely person to help him get the girl back alive: Gabriel Allon, now the head of Israeli intelligence and no ally to oppressive Islamic states. Despite his excesses and the rumors of his brutality, KBM has pledged to finally break the bond between the Kingdom and radical Islam. For that reason alone, Gabriel considers him a valuable if flawed partner. Together these strange bedfellows will face a deadly secret war not only for the Saudi throne, but for control of the Middle East.