At's book 3 of the Simon Bloom Series:

And don't forget books 1 and 2 of the Simon Bloom Series...

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Some reviews for the Gravity Keeper:

"Tweens who enjoyed Lemony Snicket will be equally amused by this..."

- Kirkus Reviews

"Reisman's fast-paced, cinematic first novel...makes scientific concepts interesting and accessible."

- Publisher's Weekly,
starred review

"Part Harry Potter, part The Hitchhiker's Guide to the Galaxy, with a hint of Goosebumps thrown in for good measure..."

- School Library Journal

"This book was impossible to put down."

- Walker Downs,
7th grader

©2007 Michael Reisman - All Rights Reserved