Amazon.com description: Product Description: Paperback. Pub Date :2014-01-01 Language: English Publisher: HarperCollins UK Sometimes one hero isnt enough - sometimes you need a full dozen Macks search for his dazzling dozen continues in the fourth instalment of this funny. action-packed fantasy series. by the New York Times bestselling author of GONE.Time is running out for Mack MacAvoy and the magnifica! It seems the only way they can defeat the Pale Queen and her evil daughter Risky is to learn the magical language of Vargran. So Mack. Jarrah . Xiao. Dietmar and Stephan travel to Europe to find the Key. an engraved stone that unlocks the power of Vargran.But can they locate the invisible castle of William Blisterthong MacGuffin. who guards the Key (Yeah. we said Blisterthong. Yeah. its as painful as it sounds.) Mack has less than 30 days to master Vargran. round up the rest of the magnifica. and defeat Princess Risky...