Summary: Gillian doesn’t listen to people who say her father’s a crackpot. His conspiracy theories about the lost technology of Cold War–era rocket scientist Dr. Underberg may have cost him his job and forced them to move to the middle of nowhere, but Gillian knows he’s right and plans to prove it. When she discovers a missing page from Dr. Underberg’s diary in her father’s mess of an office, she thinks she’s found a big piece of the puzzle. She and her friends set off on a journey into the ruins of Omega City, a vast doomsday bunker deep inside the earth. But while Gillian wants to save her dad’s reputation by bringing Dr. Underberg’s secrets to light, there are others who will stop at nothing to make sure they stay buried . . . forever.