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The 13th Sign (edition 2013)
The 13th Sign by Kristin O'Donnell Tubb
References to this work on external resources.
Wikipedia in English
Amazon.com Product Description (ISBN 0312583524, Hardcover)
What if there was a 13th zodiac sign?
(retrieved from Amazon Thu, 12 Mar 2015 18:23:43 -0400)
On her thirteenth birthday, Jalen unwittingly brings the twelve signs of the zodiac to life through a mysterious old book, and soon she, her friend Ellie, and Ellie's brother, Brennan, are battling in the streets of New Orleans to defeat the twelve and their little-known companion before time runs out.
(summary from another edition)
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