A gripping espionage thriller that follows art restorer and Israeli intelligence officer Gabriel Allon as he pursues a dangerous ISIS mastermind responsible for a deadly Paris bombing. To infiltrate the terrorist network, Allon recruits a brilliant young doctor who must go undercover as a jihadist. The story delves into the dark world of radicalisation, intelligence operations, and moral complexity, culminating in a tense and emotionally charged mission that tests loyalty, courage, and conscience.