Questa serie segue Thomas Kell, un esperto agente dell'intelligence costretto a lasciare il servizio in circostanze controverse. Inizialmente alla deriva e risentito, desidera la vita che ha perso e lo scopo che questa gli offriva. Un'opportunità inaspettata lo riporta nel mondo delle ombre dello spionaggio per un'ultima, pericolosa missione. La sua ricerca metterà alla prova le sue capacità, sfiderà la sua lealtà e lo porterà attraverso i confini internazionali, dove la posta in gioco è più alta che mai.
Six weeks before she is due to take up her position as head of MI6, Amelia Levene vanishes without a trace. Her disappearance is the gravest crisis MI6 has faced for more than a decade. There has been no ransom demand, no word from foreign intelligence services, no hint of a defection
Perfect for fans of John le Carre, a gripping and suspenseful spy novel from 'the master of the modern spy thriller' (Mail on Sunday)
Thomas Kell thought he was done with spying. A former MI6 officer, he devoted his life to the Service, but it has left him with nothing but grief and a simmering anger against the Kremlin. Then Kell is offered an unexpected chance at revenge. Taking the law into his own hands, he embarks on a mission to recruit a top Russian spy who is in possession of a terrifying secret. As Kell tracks his man from Moscow to London, he finds himself in a high stakes game of cat and mouse in which it becomes increasingly difficult to know who is playing whom. As the mission reaches boiling point, the threat of a catastrophic terrorist attack looms over Britain. Kell is faced with an impossible choice. Loyalty to MI6 - or to his own conscience?