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Janel Parrish Is the Ultimate Creepster in Latest Pretty Little Liars Throwback Photo: See It Here!

Janel Parrish as Mona during the episode A is for Answers.
Janel Parrish poses creepily inside her old "A" lair in this exclusive Pretty Little Liars throwback photo.

In honor of #TBT (aka the glorious tradition of Throwback Thursday), Us Weekly and Pretty Little Liars have partnered to bring you the prettiest little never-before-seen photos from season one on, straight from the ABC Family drama's archives. Scroll down for more on this week's picture, and check back every Thursday to see a new one!

Ah, our dearly departed Mona—or is she? (Watch the last couple episodes if you don't know!)

It's Thursday, which means Us Weekly's latest Pretty Little Liars #TBT photo is in—and this time it features Janel Parrish as Mona Vanderwaal, creepily staring off into the distance inside her early "A" lair.

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The photo is from PLL's season four, episode 24, entitled "A is for Answers." And yes, it's for those of you who were wondering how wild Mona must have looked just hanging out in her hate den, plotting her revenge against the girls.

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Of course, the true focal point of the episode was the flashback that revealed some of the details surrounding the night Alison (Sasha Pieterse) went missing—including the fact that Mrs. D (Andrea Parker) seemed to recognize "A."

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Check back next week for another throwback pic—and tune in to Pretty Little Liars Tuesdays on ABC Family at 8 p.m. EST.

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