The Hon. Celia Ashwin is young, beautiful, upper-class—and a volunteer ambulance driver at the Bloomsbury Auxiliary Ambulance Depot. Cool under fire, she revels in her exciting and extremely dangerous job. When her husband, a notorious fascist, is released from prison, rather than return to her unhappy marriage Celia joins forces with Simon Levy, a man who appears to despise her and all she stands for, to uncover the truth of her husband’s treachery. In so doing, she discovers that one ruthless traitor can be more dangerous than any German bomber, and that love knows no boundaries of class, race, or upbringing.