Imagine you've just discovered you're the most significant person who's ever lived. A hero. You saved the world from an alien invasion. If it wasn't for you, everyone would be dead. Sounds pretty good, doesn't it? That's exactly what happens to Geoffrey Stamp, but there's just one problem-he can't tell anyone. You see, Geoffrey is a Time Rep-a tour guide for the 21st century, meeting people from the future who travel back in time for their...