I will just say that while it was not nearly as good as the first book (which still gives me chills when reading it), it is an imaginative continuation and expansion on the world Shusterman created in "Unwind". There is a lot more detail and investigation that goes into how the world came to allow unwinding. You also meet a new character, Cam, who added a new element and plot twist to the story. I can't wait for the final installment, even if I think the first book can very well do just fine on its own.