Twelve-year-old Charlie and his friends must stop nightmares from taking over their town before it's too late.

Jason Segel is a comedian who is best known for his role in the TV series, How I Met Your Mother. He also recently played David Foster Wallace in the movie, The End of the Tour. Besides acting, he enjoys writing and composing music. Nightmares! is his first novel. Kirsten Miller is a novelist and the author of the Kiki Strike series.