Pretty Little Liars 100th Episode Promo: Season 5, Episode 5 — “Miss Me x 100″ (VIDEO)
Credit: ABC FAMILY/Eric McCandless    

Pretty Little Liars

Pretty Little Liars 100th Episode Promo: Season 5, Episode 5 — “Miss Me x 100″ (VIDEO)

Pretty Little Liars Season 5, Episode 5 (“Miss Me x 100") is more than just another episode of our favorite teen murder mystery — it's the 100th episode! And as you can tell from this promo, the writers went all out to make sure this is a big one.

Alison (Sasha Pieterse) is finally headed back to school. She wants to make amends for what happened in the past — or at least she wants to appear to make amends; it's always hard to tell how genuine she is — but Mona (Janel Parrish) and her army aren't the type to forgive and forget. We are already dying to see more of that showdown in the promo. Mona vs. Ali? Yes please!

Plus, we don't see it in the promo, but we Caleb (Tyler Blackburn) is back. And Jenna (Tammin Sursok) is back. Awesome.

Want to know more? Here's the official synopsis of the episode:

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.

Check it out!

What do you make of this promo? Let us know in the comments below!

Catch this episode of Pretty Little Liars on July 8, 2014 at 8 p.m. ET on ABC.