Thirteen-year-old Paola Santiago must return to the void to rescue her best friend Dante and face her biggest foe yet: El Cucuy, the lord of nightmares.
- ISBN: 9781368076876
- Author: Tehlor Kay Mejia
- Published: 2022 , Rick Riordan
- Themes: Fantasy and magic, Folktales and Fairytales, Friendship, Trilogy
- Descriptors: Intermediate (ages 9-14), Mexico
- No. of pages: 352