The Arrival (Animorphs #38‪)‬

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.________________________________________________________________The Andalites have returned! The main fleet flew off-course in an effort to stop the galaxy's newest threat – the Rakkam Garoo. But a small crew managed to reach Earth. Now it's up to the Animorphs to decide how to treat their new allies. Can the group be trusted? Or do they see the kids as a threat to their own mission?Ax is torn. The Andalite team wants him on board–especially the cute young female cadet named Estrid. But how can he desert the Animorphs and especially his shorm, Tobias? Ultimately, Ax will have to make a choice that will decide the whole future of the Yeerk resistance. Andalite and human….