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BOOK FOUR IN THE HUGELY SUCCESSFUL TUNNELS SERIES BY RODERICK GORDON AND BRIAN WILLIAMSAt the centre of the Earth, in a world that no one knows exists, Will is in trouble.His enemy, the Styx, are close behind. They'll pursue him to the ends of the world—any world. Meanwhile, Drake—with help from the unlikeliest of allies—is preparing to fight the Styx from above. But will his daring plan bring him closer to victory … or to certain death?“This fourth installment of the Tunnels series is smoking! With our heroes split up into different parts of the globe … Their characters are interesting and well-rounded, displaying both faults and feelings along with bouts of heroism. The authors also do a tremendous job comparing different cultures and governments, which is one of the book's themes.”—Teen Reads