Water Worm and Siren Bone

Return to Talisfarne! When Katrin and her friends attempt to return to Talisfarne, they learn that Duke Bartholomes isn't through with them yet. Even worse, a shadowy figure known as the Spider has recognized Katrin's gifts and will stop at nothing to posses them. Now Katrin and her friends must navigate the high seas where, if Bartholomes's men and the Spider's thugs don't get them, water worms and pirates await.