"The Kremlin does not forget. Six years ago, high-ranking Russian foreign intelligence officer Nikolai Volkov fled the country, accused of selling state secrets to MI6. Defecting to the UK, Volkov went into hiding. The Kremlin does not forgive. Nine weeks ago, Volkov was found slumped on a park bench in Swindon, poisoned with a lethal nerve agent - the victim of a botched assassination attempt. The Kremlin will always find you." MI6 puts Porter and Bald on a very unusual mission.
Now Volkov is missing, kidnapped from a remote safe house by a Russian snatch squad. With nowhere to run, Volkov faces the ultimate choice: work with his sworn enemies, or face the wrath of the motherland..."