Caspia discovers riddles hidden in old letters, leading her to wonderful new friendships in the city of Brooklyn

Caspia's summer is transformed when she discovers a bundle of letters containing ten botanical riddles in this enchanting adventure. Twelve-year-old Caspia hates big cities, especially one as busy as New York. So she isn't thrilled by the news that her parents are taking her to stay in Brooklyn. It's summer-devouring bad luck! But everything changes when Caspia discovers a bundle of letters, hidden in an old chest of drawers. They belonged to two sisters who lived there long ago. Each letter contains a 'green' riddle, with clues leading to a different plant.

Caspia sets out to solve the riddles and, as she does, she meets friends she could never have imagined and discovers that anywhere can feel like home, if you are just brave enough to put down new roots. The newest adventure from renowned and award winning author of Inkheart and Dragon Rider, Cornelia Funke weaves magic into every sentence of this new and exciting mystery set in the heart of New York City. The Green Kingdom is perfect for fans of the Greenwild series.