Long-lost treasure hidden in Raven Hill? Some members of Teen Power Inc think the whole idea's ridiculous. But from the moment Elmo discovers the strange rhyme hidden in an old tin box, he's hooked.
Elmo's determined to unlock the rhyme's secret. But soon he'll realise that the hunt is not going to be easy. This first mysterious clue is only the beginning of a trail full of twists and turns.
And there's trouble ahead. Elmo and the gang are not the only treasure hunters in Raven Hill. Every move they make is being watched, and secret enemies are in hot pursuit.