Pretty Little Liars is all about keeping your secrets where they belong, hidden. Based off of the 8 book series by author Sara Shepard, the television series still in its first season, aires on ABC Family every Monday at 8/7c.
Pretty Little Liars started with 5 girls, but now there's only 4. When mysterious messages start coming from someone called "A", the girls know someone knows their secrets, and they have to figure out what's going on before it's too late for them all.
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