To save her sister, she'll rewrite history. ------------------------- What would we risk to save the people we love? Sandbags line London's streets in 1940, but for Beatrice Bone the Second World War feels distant and dull. It doesn't help that she's stuck at home while her younger sister Clemmie is away doing secret war work at a mysterious place called The Park. Everything changes when Clemmie is killed in a fire. Plunged into grief, Beatrice treasures her sister's last gift: an antique pocket watch, inscribed with the words memento mori. Remember death. Beatrice quickly realises the watch is more than a memento when it transports her back in time, giving her the chance to save Clemmie. But there are consequences to changing the past, and when her actions have a ripple effect, Beatrice begins to wonder: what is she risking by defying death? Her own life, or her country's future? In her most ambitious and emotionally resonant novel yet, Emilia Hart once again conjures the power of female resilience and the ability of love to transcend time.