It is 1992. The Soviet Union has broken up, and a Russian nuclear scientist is trying to start a new life in London. But he finds that he cannot throw off his past so easily. The secret knowledge possessed by Dmitry Gavrilov attracts those wanting to develop clandestine nuclear weapons, as well as the intelligence agencies trying to prevent them. And a British journalist is also on the case, trying to expose him. As the pressure on him tightens, Dr Gavrilov finds himself drawn into a complex plot which will threaten not only his own life, but also that of his wife and children.'Like the very best Le Carre... gripped me more than anything I have read for a long time. People have been making serious claims for thrillers: this is one of the very few that justify them because it is one of the very few where you believe in the main characters as real and really begin to care what happens to them.' Julian Rathbone, author of 'King Fisher Lives' and 'Joseph,' both shortlisted for the Booker Prize'Mesmerising.' Mary Flanagan, author of 'Bad Girls', 'Trust' and 'Adele'