About the Book

In this very funny and irresistibly silly junior fiction book, The Bad Guys meet The Treehouse series, but in a brilliantly invented submarine.

Readers, be warned!

This book is set on Monkey Island and contains a super-smart gorilla called Harold, two regular kids called Poppy and Billy, and the world's greatest inventor, who happens to be their mum.

BUT, it also features a villainous kidnapping, a secret volcano, pirates on yachts, a hungry blue whale, exploding basketballs – and a whole lot of water.

Plus, there's Mum's greatest invention yet: a Marvellous Submarine.

Product Details

• ISBN: 9781460718049
• ISBN 10: 1460718046
• Imprint: HarperCollins
• On Sale: 04/02/2025
• Pages: 208
• BISAC1 : JUVENILE FICTION / Humorous Stories
• BISAC2 : JUVENILE FICTION / Action & Adventure / General
• BISAC3 : JUVENILE FICTION / Animals / Marine Life
• BISAC4 : JUVENILE FICTION / Science & Technology
• BISAC5 : JUVENILE FICTION / Animals / Apes, Monkeys, etc.

Other Works by Conor McCammon

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  The Marvellous Submarine (The Marvellous Submarine, #1)

  By Conor McCammon