Pretty Little Liars had an Uber A. Now, get ready to meet an "Uber Bad."

'Pretty Little Liars' Season 6 Spoilers: New Villain Has Family Ties To Who? EP Teases Finale Twist

The Liars will return to Rosewood on Jan. 12, and the allegedly peaceful suburb will quickly become a mystery hot zone once more. Hopefully Hanna and Co. have a good texting plan, because there is a new game in town. Unlike Charlotte, this villain is out for blood.

Series creator Marlene King teased Pretty Little Liars' upcoming scourge during a Twitter Q&A.

'Pretty Little Liars' Season 6 Spoilers: An Aria & Alison Rift In The Making? PHOTO Reveals Tension

So, how will the unnamed baddie earn that title? Sasha Pieterse highlighted the stark difference between Ali's sister and whatever monster will make their debut this winter.

"This season is deadly," Pieterse explained to MTV. "Charlotte was much more about playing the game...This new villain has a whole new motive - and it's really deadly. It's like. 'Do this, or I'll kill you.' Charlotte and her games look like child's play in comparison."

If that doesn't make you nervous, we don't know what will.

Pretty Little Liars will return to ABC Family (soon to be Freeform) on Jan. 12 at 8 p.m. ET.