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Pretty Little Liars

Pretty Little Liars Season 3, Episode 19 Preview: Spencer Snaps (VIDEO)

Spencer's (Troian Bellisario) downward spiral after losing Toby (Keegan Allen) has been absolutely riveting so far, and it looks like things just get more intense on Pretty Little Liars Season 3, Episode 19: “What Becomes of the Broken-Hearted.”

In this preview of the episode, Spencer is freaking the other Liars out, big time, and she finally goes completely off the deep end when Mona (Janel Parrish) pushes too hard.

Check it out below.

Catch the next episode of Pretty Little Liars on Tuesday, February 12, 2013 at 8 p.m. ET/PT on ABC Family.