Russia is struggling to defeat Ukraine on the battlefield. But can it win the war for influence? Simon Sharman is out for revenge, pursuing the assassin of his former colleague across war-torn Ukraine. Back in London, a Russian spy ring at the heart of the British Establishment remains active and a secret, yet desperate, struggle is underway to limit its attempts to sabotage the West's support for Ukraine. On the battlefields of the Donbas, Simon may have a chance to locate the assassin but larger forces are at work and he finds himself sucked into a terrifying shadow conflict between Russia and the West. Can a lone spy at war make a difference to the course of a conflict? From the rubble strewn streets of Bakhmut to the meeting rooms of Whitehall, from dirty bombs to dirty politics, A Spy at War takes the reader behind the scenes of the war in Ukraine and the war for the hearts and minds of the international community.