This series is getting better and better-and the first novel was already a must-read. I think the level of sophistication is getting above some of my students (grades 5&6), but I still encourage them to read this series. The plot twists are amazing, and each of the three principal characters is growing in his or her abilities. I particularly enjoyed learning Sally’s backstory, as she continues to become a strong female protagonist. Tom, too, is gaining confidence as he proves that he’s not just Christopher’s strong, less-than-intelligent, good natured ox of a friend. I can’t wait for the next installment to take me back in time to the Apothecary’s world.