Julia has followed her mum and dad to live on a remote island for the summer – her dad, for work; her mother, on a determined mission to find the elusive Greenland shark. But when her mother’s obsession threatens to submerge them all, Julia finds herself on an adventure with dark depths and a lighthouse full of hope… This collaboration between husband and wife team Tom de Freston and Kiran Millwood Hargrave is a beautiful, lyrical, uplifting story about a mother, a daughter, and love – with timely themes of the importance of science and the environment.