October 1942: it's been two years since Kate Rees was sent to Paris on a British Secret Service mission to assassinate Hitler. Since then, she has left spycraft behind to take a training job as a sharpshooting instructor in the Scottish Highlands. But her quiet life is violently disrupted when Colonel Stepney, her former handler, drags her back into the fray for a risky three-pronged mission in Paris. Each task is more dangerous than the next: Deliver a package of forbidden biological material. Assassinate a high-ranking German operative whose knowledge of invasion plans could turn the tide of the war against the Allies.