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.

But everything changes when Caspia discovers a bundle of letters, hidden in an old chest of drawers. 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...