Book 10 of the Animorphs series. A delightful twist in the tail and some good meat to chew on. Of the series so far this was my favorite. I do like a story that poses a good psychological / ethical question. If you’ve been holding out trying to decide if you want to read on of these. Pick this one up. You can always go back and read the other books. For pacing I loved it. Depth of plot well still could use just a little something. Overall this is a recommend.