"1919. Mama is ill. Father has taken a job abroad. Nanny Jane is too busy to pay any attention to Henrietta and the things she sees - or thinks she sees - in the shadows of their new home, Hope House. All alone, with only stories for company, Henry discovers that Hope House is full of strange secrets: a forgotten attic, ghostly figures, mysterious firelight that flickers in the trees beyond the garden. One night she ventures into the darkness of Nightingale...

England is at war. Growing up in a lighthouse, Pets world has been one of storms, secret tunnels and stories about sea monsters. But now the clifftops are a terrifying battleground, and her family is torn apart. This is the story of a girl who is small, afraid and unnoticed. A girl who freezes with fear at the enemy planes ripping through the skies overhead. A girl who is somehow destined to become part of the strange, ancient legend of the Daughters...