Kyle's imaginary friend from childhood is back... with a vengeance.

Kyle hasn't seen Mr Mumbles in years. And there's a good reason for that: Mr Mumbles doesn't exist.

But now Kyle's imaginary friend is back, and Kyle doesn't have time to worry about why. Only one thing matters: staying alive...

A major series from a fresh talent, brought to you by the publisher that put horror on the map.

This book was recognised in the Ages 8-11 Years category by the Royal Mail Awards for Scottish Children's Books.

This is volume 1 in Invisible Fiends .

This book has been graded for interest at 9+ years.

There are 288 pages in this book. This book was published 2010 by HarperCollins Publishers .

Barry Hutchison hails from the Highlands of Scotland, where he spends time writing screenplays, comics and children's books. He is in his early thirties - but on a good day could easily pass for mid-forties - and lives happily with his long-term partner and their children