Enter the Enchanted — K.A. Applegate

There is a place that shouldn't exist -- but does. There are creatures that shouldn't exist -- but do. Welcome to a land where all of your dreams and nightmares are very real -- and often deadly. Welcome to Everworld.

Jalil, David, April and Chris still haven't found Senna. They still haven't found their way out of Everworld. And -- though they have managed to stay alive -- things are starting to get worse. Because Jalil and the others are about to encounter one of the most powerful of Everworld inhabitants. And there is a good chance he knows where to find Senna. But he has his own agenda. And it doesn't necessarily include helping Jalil and the others. Now, they're about to discover what happens when you mess with Merlin....