After escaping the bog-men in the wilds of the Witchwood, Sebastian, Quinn, Elanor and Tom journey south on their impossible quest.

"Quinn, Sebastian, Elanor and Tom have defeated the black witch Githa and found the last crucial piece of the prophecy--the sea serpent's scale. But time is running out. Back now at Wolfhaven, they search desperately through the castle crypts for the sleeping heroes who they hope will save them all...before the dark moon rises and they lose everything."--Back cover.

"Quinn, Sebastian, Elanor and Tom have found a dragon and conquered the dreaded Beast of Blackmoor Bog. Only one item remains on their impossible quest--the scale of a sea serpent. Now they must journey to the drowned kingdom, where they will face their deadliest challenge yet. And there they will uncover the truth behind all that has happened...the truth that will change everything."--Back cover.

Four unlikely heroes, four mysterious gifts, four impossible elements, five thrilling books. Four unlikely heroes are forced on a perilous quest to save their people. But first, Tom, Elanor, Sebastian and Quinn must escape the overrun castle. Only they can find the four impossible elements needed to wake the sleeping warriors of the legend. Only they can drive back the darkness that reigns over the land. I know every hidden path through these woods....