The Spook's MistakeWarning Not to be Read After Dark! The fifth installment of The Wardstone Chronicles. 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,