A thrilling Gothic tale from the author of Our Castle by the Sea, shortlisted for the Waterstones Children's Book Prize.

1899. The Earl of Gosswater has died, and twelve-year-old Lady Agatha has been cast out of her ancestral home - the only home she has ever known - by her cruel cousin, Clarence. In a tiny tumbledown cottage, she struggles to adjust to her new life and the stranger who claims to be her real father.

And on the shores of Gosswater Lake, the spirit of another young girl will not rest. Could the ghost of Gosswater hold the key to Aggie's true identity?