"The Princess in Black" is a children's book written by Shannon Hale and Dean Hale. It tells the story of a young princess who secretly becomes a superhero at night. When trouble arises in her kingdom, she dons a black mask and cape to fight off monsters and protect her realm. The story emphasizes themes of bravery, friendship, and the importance of being true to oneself. With engaging illustrations by LeUyen Pham, the book captures the imagination of young readers, encouraging them to embrace their own strengths and adventures while enjoying a fun and exciting narrative.