Mona's Back! Pretty Little Liars Boss Promises Return of The Old "A"
[The following story contains spoilers from the midseason finale of Pretty Little Liars. Read at your own risk.]
Pretty Little Liars executive producer Marlene King warned us that the midseason finale would include a major shock, but that didn’t keep our jaws from hitting the floor when we learned in the final seconds of the episode that Toby Cavanaugh (Keegan Allen) was the betrayer.
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