Tory and the rest of the Virals are put to the ultimate test when they find a geocache containing an ornate puzzle box. Shelton decodes the cipher inside, only to find more tantalizing clues left by "The Gamemaster." A second, greater geocache is within reach—if the Virals are up to the challenge. But the hunt takes a dark turn when Tory locates the other box—it contains a fake bomb, along with a sinister proposal from The Gamemaster. Now, the real game has begun: another bomb is out there—a real one—and the clock is ticking.
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