Watch Pretty Little Liars Season 1 Episode 20 online via TV Fanatic with over 6 options to watch the Pretty Little Liars S1E20 full episode. Affiliates with free and paid streaming include iTunes, Vudu, Netflix, YouTube Purchase, Google Play, and Verizon On Demand.
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Hanna learns disturbing news about Caleb on this episode. The girls also realize that someone else in town has a major secret.