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



Peter Bunzl grew up in South London in a rambling Victorian house with three cats, two dogs, one sister, an antique-dealer dad and an artist mum. He is a BAFTA-winning animator, as well as a writer and film-maker. Peter's debut novel, Cogheart, has been shortlisted for lots of awards, including the Waterstones Children's Book Prize. Like Lily and Robert, he loves adventures and reading penny dreadfuls, but wishes dearly that he had a mechanical fox called Malkin.