The Navigator, Eoin McNamee, 2006, ISBN 9780375839108 This novel is about a young boy who finds himself in a very strange situation. Owen's father committed suicide, and people around town whisper that Owen will follow in his father's footsteps. Mom has sunk into a fog of depression. In Owen's forest hideaway, there is a huge flash, and everything has changed. Geographically, Owen is in the same place, but everything, and everyone, that he knew is gone. A person called the Sub-Commandant tells Owen that a rag-tag group of humans called the Resisters are at war with ethereal beings called the Harsh. They have succeeded in causing time to run backwards. The intention of the Harsh is to go back to a time before humans, take over Earth, and turn it into a frozen wasteland. Some of the Resisters think that Owen is a spy for the Harsh, or, at minimum, a collaborator. Before he died, Owen's father played a significant part in causing the war. The only way to end the war, and to get time going in the right direction, is to bring a special piece called the Mortmain, to the Puissance, or Great Machine, far to the north. Then Owen must go down into the earth a great distance, and place the Mortmain in the right spot. Naturally, the Harsh will be waiting. Does Owen succeed? Does Own even survive? Is everything restored to the way it was? As you may have guessed, this is a young adult novel, and, as such, it is pretty good. There are good characters, and plenty of action. Older young people, and adults, will also like this book.