- ISBN: 9780061964909 (electronic bk.)
- ISBN: 0061964905 (electronic bk.)
- Physical Description: 1 online resource.
- Edition: 1st ed.
- Publisher: Pymble, NSW ; HarperCollins e-books, 2009.
|General Note:|| Title from eBook information screen.
|Summary, etc.:|| After high school juniors Spencer, Emily, Hanna, and Aria think they have seen Ali, their missing and presumed dead friend, they pursue clues from a mysterious stalker, trying to find out if she is still alive.
|Target Audience Note:|| 790 Lexile.
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