October 1812: Napoleon and his Grand Army have advanced to the gates of Moscow but the deadly Russian winter is closing in fast. Back in France, food supplies are running low and the country is on the verge of bankruptcy. Even Bonaparte’s senior generals grow weary of the fight.

Meanwhile, in London, former soldier Matthew Hawkwood has been seconded to a shadowy Home Office department. His chequered past makes him dangerous and unpredictable, but his superiors believe he is perfect for a crucial mission.

The British have an undercover agent in Paris, with a daring proposal that requires Hawkwood’s unique expertise. If the plan succeeds, it could lead to peace between old and bitter enemies.

Failure would mean prison, torture and a meeting with the guillotine…