Have you ever woken from a dream feeling it was more real than your world? Could there be someone exactly like you living another life? Claire lives in an ordinary world where everything is whole. But now she feels broken into pieces as her world is suddenly shattered with grief. The silvery notes of her music box help her escape from her pain into a dream world, into Clara's world. Clara's world has always been broken. Her fragmented life revolves around scavenging and swapping objects to survive. She is determined to face the sinister side of her cracked reality to save the only family she has ever known. But the cost may be more than she bargained for. Though Claire and Clara live in different worlds, their paths are set to collide when the people they love most are faced with death. But which world is the dream? Who is the dreamer? Penni Russon has written a spellbinding tale that stretches the imagination about what is possible.