Afternoon on the Amazon by Mary Pope Osborne

Jack and Annie are swept into the heart of the Amazon rainforest, where they face quicksand, crocodiles, and giant insects. Trying to solve a riddle and escape danger, they rely on each other and a friendly monkey to survive. The jungle becomes both a challenge and a wonder as they work through clues. This adventure emphasizes resilience and the importance of respecting nature. The vibrant setting adds to the thrill of their mission.