Charlie Reade looks like a regular high school kid, great at baseball and football, a decent student. But he carries a heavy load. His mom was killed in a hit-and-run accident when he was ten, and grief drove his dad to drink. Charlie learned how to take care of himself—and his dad. Then, when Charlie is seventeen, he meets Howard Bowditch, a recluse with a big dog in a big house at the top of a big hill. In the backyard is a locked shed from which strange sounds emerge, as if some creature is trying to escape. When Mr. Bowditch dies, he leaves Charlie the house, a massive amount of gold, a cassette tape telling a story that is impossible to believe, and a responsibility far too massive for a boy to shoulder.

Because within the shed is a portal to another world—one whose denizens are in peril and whose monstrous leaders may destroy their own world, and ours. In this parallel universe, where two moons race across the sky, and the grand towers of a sprawling palace pierce the clouds, there are exiled princesses and princes who suffer horrific punishments; there are dungeons; there are games in which men and women must fight each other to the death for the amusement of the “Fair One.” And there is a magic sundial that can turn back time.