The questions keep piling up on “Pretty Little Liars.” The ABC Family drama is now in its sixth season, and the girls are closer than ever to finding out the identity of “A.” Unfortunately, they keep running into roadblocks.

Episode 3, titled “Songs of Experience,” jump-starts with Aria (Lucy Hale), Emily (Shay Mitchell), Spencer (Troian Bellisario) and Hanna (Ashley Benson) debating Andrew Campbell’s (Brandon Jones) involvement in their kidnapping. Aria and Hanna seem pretty set on the idea that Andrew is really their tormentor, “A.” However, Spencer and Emily have their doubts – especially since Sarah Harvey (Dre Davis) doesn’t think that it was Andrew who held her captive for those few years.

So, what’s a girl to do about a loose stalker problem? Return to school, of course! Hanna thinks that they need to return to get back to a routine, and the others humor her. But when it comes time to go to school, Hanna ends up in front of the building alone. Aria can’t stop thinking about Andrew, Emily can’t leave Sarah alone, and Spencer is bent on figuring out who “Charles DiLaurentis” is.

With the help of Ezra (Ian Harding), Aria manages to find out that Andrew was adopted. That further fuels her theory that Andrew is Charles. However, Spencer gets better dirt … she finds out who "Charles DiLaurentis" really is.

Although Alison’s (Sasha Pieterse) dad claimed not to know anyone by the name of “Charles DiLaurentis” in episode 2, Jason (Drew Van Acker) reveals that a “Charlie” did exist in the family. “Charlie” was supposedly Jason’s “imaginary friend.” Jason remembers his dad telling him one day that Charlie had to “go away,” and he never saw him again.

While Spencer learns the important new information, the rest of the Liars are sitting in the office of their old therapist, Dr. Sullivan (Annabeth Gish). Spencer races over there to tell them about the new clue, however thanks to “A,” they can’t do anything about it. Emily gets a video message from the burner phone she gave Sarah. But it’s not Sarah on the video call – it’s “A.”

“Mention me and someone dies,” their tormentor warns them, flipping open a blade behind a sleeping Sarah.

The Liars immediately flee Dr. Sullivan’s office and run to Emily’s house to find Sarah. Fortunately she’s fine – but now they truly have no idea who “A” is since Andrew is still at the police station. And to make matters worse, Andrew is being released because he has an alibi for the nights that Mona (Janel Parrish) and Sarah went missing. With no where else to turn, they go back to Alison to grill her about “Charlie.”

Alison wasn’t lying when she said she didn’t know anything about Charles. But she knows where to start looking. They begin to dig through all of the possible hiding spots that her parents could have in the house … and Aria discovers something in a button jar.

Inside the container is a photo of Alison’s mom with twin boys. Alison never saw the photo before, and promises the Liars that she’ll question her dad about the twins. Aria, Spencer, Hanna and Emily reluctantly leave Alison’s house … and run straight into Andrew!

Now that they know that Andrew is not their tormentor, Aria goes ahead to apologize. But Andrew doesn’t want to hear it. He tells her to stay away from him, and that the reason he was missing prior to his arrest was because he was out looking for her. Andrew wanted to be the hero that found the girls – but instead he ended up arrested as a suspect in their disappearance.

The Liars finally realized that “A” set up Andrew, but they can’t change the anything about it. And that’s not the only discovery they make. They finally figure out that “A” tricked them into thinking that they hurt each other while in the dollhouse. Although Charles did make them play “games,” none of them were ever shocked during it. The point of the twisted game was that they thought they were hurting each other, and that they would turn on each other at any moment.

It was an episode of big reveals, and it concluded with Alison and Jason confronting their father about the photo of the twins.

“Who is the other boy in this photo?” Alison asks her father. He gives them an answer that “Pretty Little Liars” viewers can’t hear … and “A” can be seen watching the whole exchange from outside the window.

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