Tío has an urgent mission for Jorge, Elena, and Amy. They must voyage to Harlem in the late 1920s. A fairy with a beautiful voice has been imprisoned. They must rescue her from her gangster captors before history learns of her and her fairy kind! Readers will learn about the Jazz Age and the Harlem Renaissance as they embark with the monster hunters on a thrilling adventure through jazz clubs, the streets of Harlem, and Central Park.