In the final installment of Beyond the Spiderwick Chronicles, Nick and Laurie
had thought they solved their giant problems when they drove all the giants into
the sea. But now, the Grace kids have come back to tell them they may have more
trouble coming their way It turns out the giants control the population of
Hydra, a dragon like creature that is creating sinkholes all over Florida. But
with the mermaids refusing to return the giants to the shore, the nixie's still
missing and the threat of a destroyed Florida drawing closer, the kids have to
take matters in their own hands.
Will