Sovereign Power

In this gripping espionage thriller, King returns to MI5 to confront a secretive organization linked to Russian intelligence and organized crime, aiming to undermine Britain’s economy through forged currency and Nazi gold. Simultaneously, Caroline Darby pursues her aunt’s killer across Marseille, with the CIA's involvement adding layers of intrigue. As the chase leads to Estonia, trust becomes fragile, and urgency mounts to prevent the assassin from striking again.