The Cogheart Adventures Book 4


Swept up in the bright hustle-bustle of New York, Lily, Robert and Malkin discover 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 the uncover the deadly truth in time to survive?

Join Lily, Robert and Malkin on a final fantastic voyage of terror and triumph, in this fourth Cogheart Adventure. Due to arrive the 9th of January 2020.

Shadowsea was nominated for the Carnegie Medal.

Cover design: Kath Millichope. Illustration Becca Stadtlander. Animation Penelope.


UK readers buy here….

Hear me introduce Shadowsea…

Shadowsea Reviews

 “Non-stop as the action is, there’s always time for Lily to realise what really matters and that love and friendship keep the world’s heart ticking.  An excellent series and while each book stands alone, I’d recommend treating young readers to the set.” ANDREA REECE

“Shadowsea is a brilliant adventure story that is wonderfully illustrated. I read the story to my daughter and she loved the tale which was a real page-turner.” ELISSA WATKIN Full review

“A fast-paced adventure, full of tension and excitement…It is darker and scarier than the previous books. Anyone who has enjoyed the first three Cogheart adventures will want to read this one too, but some parts are the stuff of nightmares and it is not for the fainthearted; only those with a real sense of adventure!” Jacqueline Harris, Books for Topics

‘Love Reading for Kids’ Reviews

“Shadowsea is a fast-paced adventure story set in New York where Lily, Robert and Malkin are literally thrown into a scary adventure in search for answers and to help the poor mute boy being held captive by his aunt. Or is he? A must-read for Spring!” SARAH (AGE 9) Full review

“You will cry and laugh over this book. Lily and her friends are on a treacherous mission of trust and friendship. Sometimes you just need to remember your past.” GIANNA SMITH (AGE 10)  Full review

“This incredible novel grips your mind and the constant tension provides an entertaining storyline that captures the reader’s attention.” RODBOROUGH READER (AGE 12) Full review