Picardie's journey to uncover the secret life of Christian Dior's beloved sister Catherine takes the reader to the heart of Occupied Paris, where he mastered the art of couture while Catherine dedicated herself to the French Resistance - until she was captured by the Gestapo and deported to the German concentration camp of Ravensbruck. After she returned to France, Catherine was barely recognisable to her brother, yet remained at the heart of his vision of femininity. As his fame grew, she retreated into anonymity, dedicating her life to tending the roses that make up her signature scent. Picardie's exploration of this mysterious wartime story leads her deep into other hidden histories, and the result is unforgettable.