Pretty Little Liars Season 5: Is Mona's twin sister coming to Rosewood? A's mysteries to unravel during finale
Emily, Hannah, Spencer and Aria in ABC's teen thriller. Pretty Little Liars/Facebook

Pretty Little Liars season 5 has finally have come to a point where fans will be able to guess the creepy serial killer of Rosewood, who hasn't stopped stalking the liars Aria, Hannah, Spencer and Emily.

Show creator Marlene King has recently revealed that the finale of ABC Family's popular teen drama will be the closest to Rosewood's mayhem maker.

King believes that fans will be able to guess the real identity of A after the season 5 finale.

"I think more and more people will guess it correctly and begin to wrap their brains around the why of it all," King said on Friday.

The finale, titled 'Welcome to the Dollhouse', will air on 24 March, but fans need to wait for four more episodes to air before the big reveal.

"I believe whole heArtedly that u will love the finale," King tweeted on Friday. "It is the MOST IMPORTANT EPISODE of PLL ever."

Many fans believe that Mona's twin sister may be the masked tormentor and will return soon to haunt the liars.

However, this is not the first time the show producers have teased the big A reveal as during the finale of each season, they hooked fans on a cliffhanger by luring them about the real identity which ideally never happened till season 4.

King, have earlier suggested that season 6 of PLL will be the hugest because the real identity of the shows villain will be made public.

The official synopsis of the next episode reads:

"The 'Liars,' now equipped with new information, decide they need to speak to Alison. But once the truth is out there, Aria quickly learns that Mike's (Cody Allen Christian) involvement with Mona (Janel Parrish) and this new revelation could have serious repercussions for her family. Determined to keep Mike safe and get Ali out of jail, the 'Liars' intensify their search for information on "A." Meanwhile, Spencer (Troian Bellisario) heads to London for an important college interview, and Alison looks to someone surprising for help with her murder trial.

The next episode of PLL is titled as 'Bloody Hell' and will air on 24 February.

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