Pretty Little Liars- Season 2 Round Up! (Spoliers)

I've just finished season 2, what an ending to the season. Who would of guessed Mona was part of Team A.

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I was honestly so shocked when the Mona bomb shell was dropped, amazing writing again by the PLL team. The series is based on the book of the same name by Sara Shepard, let me know in the comments if you have read the book and if it matches the TV series.