When a series of swift and professional killings target members of the Prime Minister's secret intelligence unit, agent Sean Dillon might be the only one who can get to the bottom of things. All the attacks have the air of a Moscow plan about them, but how can Dillon prove that Putin has masterminded this extensive revenge plot? And with the attacks getting closer and closer to home, Dillon must stay alive along enough to face off with one of the world's most deadly assassins.