"Have you ever thought you saw something out of the corner of your eye, but when you looked properly, you didn't see anything? Or thought you heard something, but when you really listened, there was nothing there? Well, you are seeing and hearing things that are there. Things that are Unseen." All around us there exists a world just on the edges of what we call Real--a realm of underground forests beneath the sewers, goblin markets held in empty parking lots, and witches living just a few houses down the street. For siblings Thomas and Jayne, a walk through the woods behind their new house...

Nine-year-old Charlotte figures she must be the luckiest kid on the planet--she's just been adopted by three fairies. Her new life plunges her into the middle of a war for the crown of the Fairy Queen, taking her from her small New Jersey town into the antiques district of Philadelphia and to dazzling fairy cities hidden in the woods, in an adventure filled with magic and dragons and stealing sports cars. But as Charlotte and the rival fairy queens approach the end of their quest, things take a turn that not even the fairies could have expected...