Magic Tree House 6: Adventure on the Amazon

Eight-year-old Jack and his little sister, Annie, are playing in the woods when they find a mysterious tree house full of books. But these are no ordinary books . . . And this is no ordinary tree house . . .
Jack and Annie might be on their scariest adventure yet - on the Amazon river! There are army ants, jaguars and piranas, as well as vampire bats, snakes and even crocodiles! And they`ve still got to find another clue to help rescue Morgan, the owner of the Magic Tree House. For a while, Jack and Annie are worried that they might be stuck in the rain forest for ever . . . But the over-active monkey they meet turns out to be friendlier than they first thought!