The fourth thrilling book in this darkly funny, horror series Darren Shan called `deliciously nightmarish'. The first book, Mr Mumbles, is shortlisted for the Royal Mail Awards for Scottish Children's Books

Kyle wakes up in hospital - which is strange, because he doesn't remember being ill. And that's not all. He's also deliriously flitting in and out of the Darkest Corners, and in the shadow version of the hospital the surfaces aren't clean, and the sharp instruments aren't used for healing.

It's Kyle's most terrifying experience yet, and it's about to get much, much worse.

The doctor will see him now...

The fourth installment of this darkly comic horror series

This is volume 4 in Invisible Fiends .

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

This book was published 2011 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