The wonderful new novel from the Man Booker Prize shortlisted author of The Glass Room is both a gripping adventure story and a moving meditation on patriotism, betrayal and the limits of love.

Marian Sutro is an outsider: the daughter of a diplomat, half French, half British, naive yet too clever for her own good. But when she is recruited from her desk job by SOE to go undercover in wartime France, it seems her hybrid status - and fluent French - will be of service to a greater, more dangerous cause. Trained in sabotage, dead-drops, how to perform under interrogation and how to kill, Marian parachutes into south-west France with an urgent mission…