The Drowned Kingdom (The Impossible Quest #4)
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.