A sinister, hooded figure with a mysterious past lurks in the grounds of Wolf Manor; watching silently as Alex Wolf returns home from boarding school to his grandparents' lavish estate. Oblivious to the many dangers that now surround him, Alex soon finds himself thrust into the centre of an unwelcome adventure, guided only by his wayward granddad Henry - the one member of his family he knows that he can trust. With Henry's help, Alex must try to unravel his family's dark secrets and discover, if he can, the extraordinary power of the Black Fire Book; for if he doesn't then someone else surely...