Pretty Little Liars TV Tie-In Edition by Sara Shepard

Pretty Little Liars TV Tie-In Edition : Paperback : HarperCollins Publishers Inc : 9780062009548 : 0062009540 : 13 Sep 2011 : The four naughty girls at the heart of "Pretty Little Liars" think their secrets are safe with Alison, but now they're receiving creepy messages from someone named "A, in the first installment of Shepard's addictive series.