Plot:
All was normal, until the arrival of a certain creature, which seems to appear out of nowhere and relentlessly hunt the Animorphs whenever they morph. And Rachel has completly lost her memory and is captured by a derranged former Controller. Unless they unite and figure out a way to destroy the creature, the Animorphs face anhilation, or worse . . .

Comments:
All in all, this was a pretty good book. Though as far as Megamorph and "special" books go, it could be better. Loved the ending, though. And as Cassie is probably my favorite Animorph, it was really cool to see how it was really she who won the battle and saved the day.