The joyride on a UFO ended almost as quickly as it started, but no one can believe where it took them. Stranded in the future, surrounded by enemies in all shapes and sizes, Ethan, Ashley, Jack, and Toni struggle to get their bearings. Ethan finds himself alone and going from bad situations to worse. The others are determined to find him, wherever he is, but they may be up against more than they can handle.
Arrival. Earth. What happened? The shapeshifting alien menace finally gets a name and an origin, though their purpose is less clear. Amusingly, the aliens aren't even the biggest danger: in this strange, familiar land, humans have fallen back on more primitive ways, and it'll take every power the kids have just to survive. There's a lot more of a sense of them as a team this time around, and Ashley finally develops more of a personality. Jack and Toni hit it off wonderfully: Jack's talent of saying exactly the wrong thing rubs up against Toni's inclination to take offense at everything. Ethan's quietly in charge, and when he's alone he quickly figures out how much he needs the rest of them.
This is the first book about more than one major character, and the book keeps shifting point of view. It isn't too hard to keep track, given the large names printed at the beginning of each chapter, but I did find myself going back to check more than I wanted.
Overall it's a strong book, though I would recommend starting somewhere closer to the beginning of the series lest the backstory spoil too much. I rate this book Recommended.