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.

Praise for A Spy Alone
'Five stars. One of the best books I've read in a very, very long time' James O'Brien, LBC
'This is first class' The Times
'Excellent' Spectator
'A highly accomplished novel from a new writer of great promise' Financial Times
'Everything a John le Carré fan could ever wish for' Private Eye #1615
'A cracker of a debut novel which really does make clear what's been going on' Bill Nighy via The Rake
‘A marvellously confident debut, sharply observed and exceptionally well written’ Charles Cumming, author of Box 88
'Beaumont is at the forefront of the espionage genre, capturing the changing nature of intelligence: soft influence and business deals are overtaking stolen secrets; long-term insinuation is replacing Cold-War tradecraft. Brilliant' I. S. Berry, author of The Peacock and the Sparrow
'The best spy novel I’ve read for years... An astonishing debut... and a brilliant portrait of how Britain allowed Russia to game our recent politics, including with Brexit' Luke Harding, author of Invasion: Russia's Bloody War and Ukraine's Fight for Survival
'A post-Brexit take on the classic British spy novel, combining a cynical ex-spy protagonist and a major role for Bellingcat-OSINT types' Shashank Joshi, Defence Editor, The Economist
'Beaumont ... catches the zeitgeist of (le Carré) .... He conveys all the world of espionage with relish, in its murky motives and surveillance techniques and the book races along and makes for a stunning debut' Maxim Jakubowski, Crime Time
'A clever, thrilling spy story that brings the feel of Eric Ambler's shadowy political intrigues right into today's world' Jeremy Duns, author of Free Agent
‘Tense, compelling and remarkably timely... Shades of some of the greats of spy fiction – it might even be better than Charles Cumming’ Dominick Donald, author of Breathe