The Tomorrow Code, by Brian Falkner

 This was a confusing book about time travel. It was great though. It had a strong beginning and closing chapter. All the characters were described well and so was the setting. Right when I thought the ending was near I found new surprises ever few chapters. This is a epic, highly recommend book for sixth through eight grade. This is a good website about the book: http://www.tomorrowcode.com/