'Pretty Little Liars' Star Lucy Hale Unveils ‘You Sound Good to Me’ Music Video During Show's Winter Premiere
Actress Lucy Hale arrives at the 2014 People's Choice Awards in Los Angeles, California January 8, 2014. REUTERS/Kevork Djsnsezian

As the title of "Pretty Little Liars" Season, Episode 5 suggests the 100th episode is set to hit the TV screens. Episode titled "Miss Me x 100" is going to feature "epic emotion." It is going to be filled with drama and action.

Showrunner Marlene King revealed via Twitter that the upcoming 100th "Pretty Little Liars" is going to solve one of the mysteries.

The 100th episode which airs in 2 weeks is beyond. There are no words to describe it. Epic emotion. Epic WTF! @PLLlittletheory

— I. Marlene King (@imarleneking) June 27, 2014

Warning: Spoilers Alert!

This article contains spoilers for "Pretty Little Liars" Season 5, Episode 5. Read if you want to know more.

1. Caleb's return: He is back on the show. Caleb (Tyler Blackburn) comes back to town. He sports a new look. Tyler and Sasha Pieterse talked to Wetpaint at 100th episode celebration in Los Angeles.

Sasha revealed that Tyler is the only person she haven't had any scenes in the past.

"And we now are introduced as characters and there's one scene in particular that we've already shot and it's fun. It's really fun, because he's literally the only person that I haven't filmed with," said Sasha.

Tyler explained that his character doesn't believe Alison or her story.

"So he kind of corners her but she's pretty fierce too and combats right back," added Tyler.

2. Ali returns to school: She is back in school. However, according to the promo, it is not going to be easy for her because of Mona's presence.

The Liars are by Ali's side.

Credit: YouTube/ABC Family

3. Ali's return worries Hanna: In a sneak peek for "Pretty Little Liars" Season 5, Episode 5, Hanna is worried about Ali's comeback. Travis is comforting Hanna and supports her.

Credit: YouTube/ABC Family

4. Jenna's back: This episode is truly special as so many characters are making a comeback. Along with Tyler, Jenna is also back. She knows what happened to Shana.

"Pretty Little Liars" Season 5, Episode 5, "Miss Me x 100" airs Tuesday, July 8, 2014 on ABC Family.