Pretty Little Liars Season 3, Episode 15 Preview: "No One Can Trust Her" (VIDEO) Tweet January 9, 2013 at 11:28AM EST by Rebecca Martin Related: Pretty Little Liars, Hanna Marin , Spencer Hastings , Emily Fields , Mona Vanderwaal , Byron Montgomery , Toby Cavanaugh , Lucas Gottesman , Season 3 , Season 3 Episode 15 Credit: YouTube Air date: January 15, 2013 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.
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