Pretty Little Liars 5×05 “Miss Me x 100” – Its Alison’s first day back at Rosewood High and Mona and her army are ready in “Miss Me x 100,” the 100th episode of ABC Family’s hit original series “Pretty Little Liars,” premiering Tuesday, July 8th (8:00 — 9:00 PM ET/PT). The day has finally arrived — Alison’s first day back at Rosewood High, and neither the PLLs nor Alison are really ready for it. Determined to put on a brave face, Alison returns to also help heal the damage she did years ago. But are apologies enough for those who Alison has hurt in the past? Not if Mona and her army have anything to say about it. Meanwhile, Caleb and an old foe return to Rosewood.