An incredibly enjoyable book from a very accomplished writer. The children are drawn convincingly and the author gets into his main character very well . . . An exciting and touching story about friendship and the power of imagination, especially that of a child

A haunting and captivating read which will keep you hooked to the end

A very spooky story . . . A compulsive read

The spine-chilling escapades of the Spook and his apprentice continue apace

Spooky stuff!

This is a spine-tingling, seriously scary read with some genuinely terrifying moments

...the essential strengths of the series remain: sympathetic characters, arcane motivations, unclear loyalties and a healthy helping of real darkness.

This is a spine-tingling, seriously scary read with some genuinely terrifying moments and is therefore suitable for older readers who don't insist on having the light on in the hall when they go to sleep.

an outstandingly imaginative, well written thriller

Delaney has a talent for creating the most dark and eerie settings and situations, in which the reader becomes totally immersed

fast-paced and suspenseful: plenty of plot twists and character nuances engage the reader throughout (NB: US review, book listed as The Last Apprentice; Attack of the Fiend, pub. HarperCollins)