Devout Pretty Little Lairs fans should be able to correctly identify 'A' by the time season 5 comes to an end.

Will Alison Be Killed Off On 'Pretty Little Liars'? Marlene King Talks New Prison Storyline

Rosewood's most notorious killer will be revealed before season 7 begins, but series creator Marlene King doesn't' think viewers will have to wait quite that long to unwind 'A's tangled web.

"By the end of this season I am sure some people will guess correctly and for the right reasons," King tweeted following "Fresh Meat."

What Does Mike Montgomery Know About Mona On 'Pretty Little Liars'? Writer Teases Upcoming Reveals

New clues may manifest as the series starts to pickup the pace. Last summer saw the Liars focus more on their relationships but the winter season will bring more action.

"This is some of the most aggressive storytelling we've done in the history of the series," executive producer Joseph Dougherty told The Hollywood Reporter. "To quote my title for the holiday, 'It's a Dark Ride.' If you can watch it live, don't watch it alone - we've got some pretty hairy stuff coming up."

Find out more when Pretty Little Liars airs Tuesdays at 8 p.m. ET on ABC Family. Click the video below to see a preview for the series' next episode.

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Pretty little liars, Television, ABC Family