Once again packaged as a doorstopper but reading as if it’s half the length, the fourth episode in the harrowing training of teenaged Tom Ward as a bulwark against all that is evil and supernatural brings some disturbing revelations about his absent mother’s identity. Plus there are battles with undead creatures, a trained assassin who likes to use scissors, three entire clans of witches—and not just a fiend, not just some fiend, but Old Nick himself, newly re-invited back to the world and far more powerful than all other threats combined. Fortunately (if that’s the word), with help from a small but doughty crew of allies that swells with the addition of two winged, bestial vampires who turn out to be relatives, Tom pulls through; the stage is set, though, for further bloody struggles with the Devil and his minions. Dark chapter-head illustrations add a properly ominous air to the narrative, as do closing notes on each ghost, ghast, wight and worse he has met. Not recommended for beneath-the-sheets reading. (Fantasy. 11-13)