The first thing that drew me to this book was the idea of Nightmares. Sure, Nightmares have been mentioned in other books that I have read, but they were never the prominent character. As such, I figured I would give this one a shot. I found this novel to be highly enjoyable, with some twists and turns that I didn't see coming. 
 My main complaint about this book was the writing. This might seem like a big thing, but it wasn't in the long run. While Ms. Arnett's writing was good, it wasn't fabulous. There were times that I felt the writing read more like a middle grade book than young adult. Additionally, the story was a tad predictable. I was able to figure out who the main bad guy was, and who was helping him. However, the story was a fun read nonetheless. 
 Aside from those problems, the characters were funny and I enjoyed reading them. I thought the story was unique, and the mythology was well thought out. Ms. Arnett has created a world unto herself that was took the reader on an exciting, fantastical journey into the world of Nightmares. There are other supernatural beings in this book as well that I enjoyed learning about. 
 This story is a quick read that is takes an old idea, and spins a new take on it. It was refreshing and a little bit creepy. I don't know if I'll read the next one yet, but I probably will check it out. I'm interested to see where the story will go from here.