The highly-anticipated eighth book in the #1 New York Times, Wall Street Journal, and USA Today bestselling series, with over 8 million copies in print!

Picking up after Quint and Dirk's Hero Quest, the Last Kids meet up once again to scout out an evil fortress where Thrull has abducted Ghazt to carry out a sinister plan. Now, Jack, Quint, June and Dirk must make their own plans to infiltrate the stronghold before Thrull gets any closer to bringing Rezzoch to the human dimension.