In this fantasy novel for teens, Owen discovers that he is a Navigator and must save the world from The Harsh, who is causing time to run backwards, thus destroying the whole world. For a time travel novel, however, this is fairly uninteresting. The world McNamee creates here is too run-of-the-mill for fantasy novels. Many of the characters are quite interesting and following Owen, who begins in our world but gets sucked into the battle for time, as he tries to figure out how the world of time keepers work is interesting. This is a solid, though unspectacular teen debut by McNamee.