"Blue's Bad Dream" is "Blue's Clues" book #21. In this story, Blue and her best friend Magenta are having a sleepover at Blue's house. While Magenta goes to sleep, Blue decides to do a little reading under her covers. She reads a story about a dragon, but the story scares her a bit and she has a nightmare about it. When she wakes up, she tells Magenta and her friends in the Big Blue House help her to turn her nightmare into sweet dreams.
This story is the new-style format in which Blue and Magenta can talk freely to themselves and other characters, even though they're not in Blue's Room. Still, the story is excellent and the illustrations are as colorful and pleasant as always. This is really a great Blue's Clues book because it deals with an important topic for kids in a fun and interesting way.