When Claudette Bourvil is recruited to the French Resistance the last thing she expects is that she will be sent to work in the heart of Paris to spy on senior Nazi officers.

Claudette learns how to survive in a city ravaged by war, where the citizens are murdered on the whim of the occupying force. Constantly under threat of discovery, and in danger of losing her life, Claudette risks everything when she falls in love with the wrong man, the worst kind of man.

Over seventy years later, in rural Oxfordshire, Connie Webber discovers seven letters linked to a famous playwright, Freddy March. The letters will eventually lead her to Paris where she discovers the horrific reason behind Freddy's life long depression. As his mother's story unfolds Connie uncovers a dark past that the city has tried to erase from history.