The search is still on for Mrs. DiLaurentis Pretty Little Liars' killer.

'Pretty Little Liars' Season 6 Episode 12: Who Is A Suspect? Marlene King Drops New Uber A Teasers

The Liars left high school behind as season 6B began, but there's one mystery from those schoolgirl days that PLL has yet to resolve. Big A has come and gone, but Mrs. D's murder didn't fold into Charlotte's tale. Now that Uber A is in play, viewers will finally get the answers they've been waiting for.

At some point within the next season and a half, the DiLaurentis murderer will come to the fore.

'Pretty Little Liars' Season 6: The Liars Need An Alibi (Again) & THIS Old Friend Will Help Them Out

While the majority of the seasons 6B and 7 will focus on the new big bad, King promises that all loose ends will eventually be tied up.

There's a new mystery. There's a little bit of old mystery dabbled in there, but not a lot," King teased, according to E! Online. "It's mostly new mystery. There will be a new Big Bad in their lives and a new mystery to solve."

Who do you think the killer is? Sound off in the comments below!

Find out more when Pretty Little Liars airs Tuesdays at 8 p.m. ET on Freeform.

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