With the Fiend temporarily restrained and the war over, Tom, Alice, and Master Gregory return to Chipenden to oversee the rebuilding of the Spook’s house. The Spook’s extensive library was destroyed in the fire, and soon a mysterious note arrives offering a collection of books for sale to replace what was lost. Along with Judd, a former Spook’s apprentice connected to the note’s author, Tom and his master journey to see these books, only to encounter a sect of Romanian witches and demons committed to doing the Fiend’s work and restoring him to power. Book ten in Delaney’s The Last Apprentice series continues the incremental pace of the plot, introducing yet another old apprentice and collection of denizens of the dark. Tom learns that he will have to sacrifice Alice to banish the Fiend forever, but it may be difficult for the reader to fear this, since Delaney often creates life-or-death situations for his characters that they neatly escape. Here, Tom believes his master has been killed and tortured by the Romanian demons, but a sophisticated reader will predict the outcome of this almost immediately, deadening any suspense. Several instances of characters suddenly remembering the exact information needed to save the day are grating, as is Tom’s continued and constant wondering about the wisdom of using Alice’s dark magic in their fight against the dark. Many of this book’s illustrations are genuinely sinister and may help build the tension in what is otherwise a lackluster installment in this long series. Ages 11 to 15.