Murder, mayhem and mystery meet in the gripping Victorian world of the bestselling series,The Cogheart Adventures… Join Lily, Robert and Malkin on a fantastic voyage of terror and triumph in Shadowsea, their fourth and final adventure, from award-winning Peter Bunzl.Dark secrets never stay submerged for long.Swept into the bright hustle-bustle of New York, Lily, Robert and Malkin discover that danger lies beneath the city’s surface. For there are chilling goings-on…A strange boy held captive who needs their help, and a shadowy professor with a treacherous plan. Searching for clues, Robert and Lily are plunged into deep water… But will they uncover the deadly truth in time to survive?Praise for The Cogheart Adventures: A steampunky tale of ambition, pursuit and revenge. The Guardian Expect thrills, mayhem and mystery. BookTrust A delightfully badly behaved heroine, enthralling mechanicals and a stormer of a plot. Abi Elphinstone A glittering clockwork treasure. Piers Torday