Pretty Little Liars is on the precipice of something major.

'Pretty Little Liars' Season 5: Marlene King Talks 'Twin Theory', Who Could Have A Double?

The ABC Family drama will give fans a major clue to A's identity in Tuesday's season 5 finale, and it will be more emotionally taxing then viewers may expect. "Welcome to the Dollhouse" will give viewers an in depth look at Rosewood's most murderous resident while still managing to leave many questions up in the air.

"This is an episode that's not just shocking and action-packed and scary as hell -- it's demented and emotional," series creator Marlene King teased, according to ET Online.

'Pretty Little Liars' Season 5: 'A' Reveal Is 'Twisted' & 'Very Dark', Sasha Pieterse Teases Finale

While there will still be "a little bit more story left to tell after the episode," one major reveal will focus on A's identity in relationship to his/her very human nature. The Liars will learn that this sadistic and faceless monster is just as human as the rest of them.

"A certain character in this finale says something like, "Oh my God, 'A' has a soul." That to me tells us yes we're ramping up to the end of this story -- but it's not just pulling off the mask of 'A', it's really finding out that 'A' is human too and 'A' has a soul like anyone else," King explained.

Are you ready for "Welcome to the Dollhouse"? Click the video below to see a preview for the season 5 finale.

Find out more when Pretty Little Lairs airs Tuesday at 8 p.m. ET on ABC Family.