- ISBN: 9780982618455 (electronic bk.)
- ISBN: 098261845X (electronic bk.)
- Physical Description: 1 online resource (227 pages).
- Edition: 2nd ed., 1st Paragon ed.
- Publisher: [United States?] : Paragon Press, 2010.
|Summary, etc.:|| As the youngest members of a top-secret scientific team investigating a fantastic alien city buried deep underground, Ryan and Regan Resnick must outwit a group of ruthless invaders who have taken the rest of the Prometheus team hostage.
|Target Audience Note:|| 830 Lexile.
|Source of Description Note:|| Description based on print version record.
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|Subject:||Science fiction > Juvenile fiction.
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