"Spook's Apprentice" is a fantasy novel by Joseph Delaney that follows the story of a young boy named Tom Ward. Tom is the seventh son of a seventh son, which gives him special abilities. He becomes the apprentice of Master Gregory, a local spook who protects the village from dark forces and supernatural creatures. As Tom trains under Master Gregory, he learns about the dangers of the dark arts and faces various challenges, including encounters with witches, ghouls, and other malevolent beings. The story explores themes of bravery, friendship, and the struggle between good and evil as Tom discovers his own strengths and weaknesses.