Author:  Delaney, Joseph 
Interest age: from c 12 years
Published on 2 January 2014 by Penguin Random House Children's UK (Red Fox) in the United Kingdom as part of 'The Wardstone Chronicles' series.

Paperback | 496 pages
197 x 131 x 31 | 344g
The Spook's Mistake is the fifth book in Joseph Delaney's terrifying Wardstone Chronicles – over 3 million copies sold worldwide!'The moment of danger is close. Very soon our enemies will be here.'The Spook has sent  his apprentice, Tom, to be trained by another Spook whose methods are harsh and tough. But faced with a powerful water witch, Bill makes a fatal error, leaving Tom to face his enemies alone. Can the Spook get there in time to save his apprentice? Or will his own mistakes give final victory to the dark?