Nightmares! by Jason Segel and Kirsten Miller

Charlie Laird has several problems.
 
1. His dad married a woman he is sure moonlights as a witch.
2. He had to move into her purple mansion—the creepiest place in Cypress Creek.
3. He can’t remember the last time sleeping wasn’t a nightmarish prospect. Like even a nap.
 
What Charlie doesn’t know is that his problems are about to get a whole lot more real. Nightmares can ruin a good night’s sleep, but when they start slipping out of your dreams and into the waking world . . . well, that’s something only Charlie can face. And he’s going to need all the help he can get, or it might just be lights-out for Charlie Laird.
 
For good.