When 'Pretty Little Liars' returns for the second part of Season 6 in January, events will begin five years after the mid-season finale and fans will see the all the liars - Aria, Emily, Spencer and Hanna, grown up and in different places.

Towards the end of mid-season finale, fans saw liars returning to Rosewood to caution Alison about the new villain. However, they refused to name the villain, but only referred to him as "He."

According to IB Times, a short promo for the upcoming Season 6B as well as photos from the set has given viewers some idea about what the Liars will be up to in the remaining part of the season. Simultaneously, fans have also come up with various theories and plot speculations, including a possible affair between Aria and Ezra.

In fact, the Instagram account Pretty Little Logics forecasts that Aria will be married to someone else in the second half of 'Pretty Little Liars' Season 6. However, this will not prevent Aria from having an affair with Ezra, who will perhaps be running the new brew in town.

A different post on the same Instagram account states that the new villain coming after Alison in Season 6B will be called the Big Bad, and he will be the new "A" in the series. It is speculated that the new villain, The Big Bad, will a lot more dangerous compared to Charlotte, who was revealed as "A" in the Season 6 mid-season finale.

There are rumors that the new mystery will be carried over to Season 7, which may possibly the last season of 'Pretty Little Liars.'

Meanwhile, 'Pretty Little Liars' executive producer Marlene King shared with The Hollywood Reporter that in the new installment, fans will see the girls still be living in different cities. Over the years, the girls have tried to keep in touch with each other through social networking sites. But over these five years they have accumulated a lot of secrets, which they aren't yet ready to share, King added.

King further told the publication, "The girls have spent five years apart - they've had five "A"-free years of life just to live a normal life - as normal as they can, having survived all of this. There's a very great scene in this first episode back where Aria (Lucy Hale) talks a little bit about the residual "A"-ness affecting her life, and it's great performance. She did an amazing job with the scene. So they come back together - they've been apart for five years - and they're very excited to see each other, but they still have secrets, too. They've had five years of being apart to need to cover up some of what they've been doing," King noted.

'Pretty Little Liars' will return to ABC Family for the second half of Season 6 in January.