A sinking boat. A girl in disguise. A disappearing sea. When Fortune Sharpe carves a boat from a tree with her beloved brother, Gem, she's only having a bit of fun. But now is not the time for a girl to be drawing attention to herself. She is sent away to find work dressed as a boy. Luckily a rich manor house is hiring. Yet Barrow Hill's inhabitants harbour dangerous secrets of their own, the suspicious owner is hunting for witches, and the house itself is a little too close to the sea.