'I am Grimalkin, and I have already chosen those I will kill . . .'
Grimalkin has made it her lifetime ambition to destroy the Fiend, avenging the brutal murder of her son.
Having grudgingly joined forces with the Spook and his apprentice, Tom, and assisted them in the binding of the Fiend, she is now on the run. And her mission is deadly.
She has to help them bind the Fiend's spirit for ever no matter who - or what - comes after it . . .
This latest chilling instalment in the Wardstone Chronicles follows Grimalkin, the terrifying witch assassin, feared wherever she is known.
The series that inspired the forthcoming movie The Seventh Son, starring Jeff Bridges, Ben Barnes and Julianne Moore.
Read an extract from the prologue of Joseph Delaney's chilling third instalment in the new Spook's legend - Dark Assassin.
Time is running out for Thomas Ward. His final battle against the Fiend is drawing near, and the Spook's apprentice has never felt more alone in his task. Tom must risk his life to prevent the evil beast from entering this world, even as he learns that the final destruction of the Fiend may involve a sacrifice more terrible than he can imagine . . .