The overarching story left me feeling a bit let-down but the characters and Rosen's ability to keep the tension tighter than a violin string are put to their best use here. I loved Strange Robby and liked the other characters, except, of course, for the ones I wasn't supposed to like. She did her job well. And besides being a fine adventure novel, it is thought-provoking as few books are. I read this to a friend who was legally blind and we had some lively discussions about it, although we both agreed it was a remarkably good book.