The Books of Magic #5: Lost Places (Jablonski, Carla. Books of Magic, #5.)

Do you believe in magic? Timothy Hunter is just like any other thirteen-year-old boy in London...except for the tiny fact that he might be the most powerful magician of his time.Tim knows how stories work: knight saves princess from dragon, everyone lives happily ever after. Then his girlfriend, Molly, is abducted by a visitor from the future. Normally, of course, the hero would rescue the girl -- but this is no ordinary fairy tale...