Cathy's Key

From Author Wars - https://authorwars.com/publications/cathys-key-351751.html

Overview:

Title: Cathy's Key
Author: Jordan Weisman, Sean Stewart
Year: 2008
ISBN-10: 9780762430857
Publisher: Running Press Kids
Price: $17.95
Pages: 211
Binding: Hardcover
Type: Novel
Title Reference: Cathy's Key
Notes: Data from Amazon.com as of 2011-05-02.
Cover artist and interior artists on copyright page of Archive.org copy. Last page is unnumbered.