full size STILL: Pretty Little Liars Season 3, Episode 15 Preview: "No One Can Trust Her" (VIDEO)
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We all saw a bit of the new Mona (Janel Parrish) in Season 3, Episode 14: “She’s Better Now,” and now this preview for Season 3, Episode 15: "Mona-Mania!"  (January 15) promises much more madness to come.

From slashed tires to chilling smiles, Mona, the "A" team, and other creepy characters are back to making the Liars' lives a living hell. Check it out below!

Credit: YouTube
Video:
Pretty Little Liars Season 3, Episode 15 Preview: "No One Can Trust Her" (VIDEO)

Catch the next episode of Pretty Little Liars on Tuesday, January 15, 2013 at 8 p.m. ET/PT on ABC Family.