Animorphs #22 The Solution-4 stars

So as you see this is what the book looks like. So it's about a girl who met a alien with four friends of hers. The alien gives them magical powers to be able to become whatever animal they touch. All five of them give their powers to a boy named David. But David`s parents became controllers (a evil Grey slug is in their ears that takes over the actions of what that person does.) So David decides to use his powers for evil because he is angry that someone is controlling his parents. He causes all sorts of trouble. But animorphs have a time limit that they can only be in a morph for two hours. The controllers watched David while he was morphed into a rat so he can not change back before 2 hours is up and he is stuck as a rat for the rest of his life.