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Watch Pretty Little Liars Season 1 Episode 20 online via TV Fanatic with over 2 options to watch the Pretty Little Liars S1E20 full episode. Affiliates with free and paid streaming include Amazon and iTunes.

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Episode Details

Pretty Little Liars Season 1 Episode 20: "Someone to Watch Over Me"

Hanna learns disturbing news about Caleb on this episode. The girls also realize that someone else in town has a major secret.

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