The Android (Animorphs #10)

We can't tell you who we are. Or where we live. It's too risky, and we've got to be careful. Really careful. So we don't trust anyone. Because if they find us...well, we just won't let them find us. The thing you should know is that everyone is in really big trouble. Yeah. Even you.
There's a massive outdoor concert coming to town. Offspring. Alanis. Nine Inch Nails. Marco refuses to miss it. He even has a great idea for getting in, uh, free: He and Jake will morph dogs. Marco thinks it's a perfect set up (especially since girls LOVE cute dogs). And even though Jake doesn't agree at first, he finally decides that if Marco goes to the show someone should be around to watch him. Right? Right. So off they go, Jake's morphed his dog, Homer, and Marco has acquired a cute (albeit goofy) Irish Setter. Everything was going to go according to plan.But when they get to the show, they notice some kids handing out posters for The Sharing. One of them is an old friend of Marco's, Erek King. Okay. So Erek is in The Sharing---but there's another problem. As dogs, Marco and Jake's sense of smell is pretty phenomenal, but when Erek walks by he doesn't smell human. In fact, he doesn't have a scent at all.It doesn't take long for the Animorphs (and Ax) to figure out that Erek is an android. One of a small group of androids called the Chee. And they aren't too crazy about the Yeerks either. Sounds great, huh? The kids have finally found allies. But as the Animorphs have discovered in the past, things hardly ever work out the way you'd planned. It just so happens that the Chee are a nonviolent species. They do not fight. They do not kill. But they do have lots of information. Information that will help the Animorphs slow the Yeerks down a little bit more...for now.