Frustrated fans are the reason behind Pretty Little Liars rush to the finish line.

'Pretty Little Liars' Season 6: The Actor Behind 'A' Is In The Know, Marlene King's Cryptic Tweet Decoded

For five seasons, the Liars have battle major twists and unsettling turns in their efforts to close the book on 'A' once and for all. With one little 'A' already felled way back in season 2, the start of the sixth seasons heralds the long anticipated end of Uber 'A.'

As Emily, Hanna, Aria, and Spencer spend the next nine episodes in hot pursuit of Charles DiLaurentis, series creator Marlene King notes that the decision to unmask 'A' comes now that viewers have had enough of the series' games.

'Pretty Little Liars' Season 6: What Do The DiLaurentis Know About Charles? Marlene King & Sasha Pieterse Explain

"Midway through Season 5, I sensed a wave of frustration that I hadn't sensed since midway through Season 2 when we knew it was time to give up Mona," King informed Buzzfeed. "The fans were very vocal that they were getting too frustrated."

This doesn't mean that the Liars' adventures are over, however. The ABC Family series was renewed through season 7, and the 'A' mystery will undoubtedly have lasting repercussions as the Rosewood teens enter adulthood with a five-year time jump.

Are you ready to move on from Rosewood High following season 6's tenth episode, "Game on Charles," or would you rather sleuth around the 'A' mystery a little longer? Sound off in the comments below!

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, "Songs of Innocence."

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