A string of unusual crimes hits Castle Key and the chief suspect seems to be a skeleton! Scott, Jack, Emily and Drift the dog immediately start investigating, but nothing about the mystery makes sense.

Will the friends finally be defeated by this baffling mix of crimes and the mysterious culprit, or can they uncover the sinister secret that connects them all?

The sixth gripping mystery in the exciting new Adventure Island series!

This is book 6 in Adventure Island .

This book has been graded for interest at 9-11 years.

There are 144 pages in this book. This book was published 2011 by Hachette Children's Group .

SAVIOUR PIROTTA is the award-winning author of over one hundred fiction and nonfiction books for children. His works have been translated into 28 languages. Originally from Malta, he now lives in England. LEO HARTAS has been illustratting professionally for over 20 years and has developed a range of skills and talents in traditional illustration and digital painting. He has worked for a number of different publishers including BBC Worldwide, Walker Books, Macmillan's Children's Books, Random House and QED. Visit her website at www. helenmoss. org. uk and follow her on Twitter @hmadventure.