Wanted a pretty little liars novel

Former best friends Hanna, Aria, Spencer, and Emily, who lost their best friend and leader, Alison, years ago when she disappeared, find themselves in grave danger when they pursue the truth about Alison.

Main Author: Shepard, Sara, 1977-
Format: Books Print Book
Language: English
Published: New York : HarperTeen, c2010.
Edition: 1st ed.
Series: Pretty little liars ;
Subjects:
Online Access: Go to Downloadable eBook Here.