Aria discovers pages from Alison’s diary are missing from her hiding spot (her boots). She begins to suspect her father, Byron Montgomery , of being involved in Alison's disappearance, especially after seeing him act aggressively toward Meredith .
Paige suffers from severe anxiety and panic attacks following her kidnapping, which culminates in a stressful incident where her tires are slashed in the woods—later revealed to be the work of Toby Cavanaugh , who is operating on the A-team. Critical & Fan Perspectives
Pretty Little Liars Recap: “Mona-Mania” (Season 3, Episode 15)