One of the many questions we have about the Pretty Little Liars Season 3 Halloween episode (Season 3, Episode 13: “This Is a Dark Ride”) is: Who was the person in the "joker" costume?

A new set of tweets from PLL writer Joseph Dougherty sheds some new light on the situation.

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A fan asked Joseph, who wrote the episode, "Was the person in the Joker costume part of the A Team?"

Joseph replied, "You mean chasing Spencer on the train? Not a Joker, but The Queen of Hearts. Ring a bell?"

The astute fan quickly realized that Mona (Janel Parrish) has been associated with the Queen of Hearts in the past. She was shown clutching the card while singing to herself in Season 3, Episode 3: “Kingdom of the Blind,” an episode that was written by none other than Joseph.

When the fan pointed this out, Joseph replied, "Not saying it was Mona, just saying you can't trust a coincidence."

What do you think: Does this new clue change your perspective on who was in the costume? We still think Mona's a little small to have been the person in the costume, but the fact that it was supposed to be the Queen of Hearts does make us lean towards thinking it was a woman...

Find more Pretty Little Liars spoilers here.

Catch the return of PLL Season 3 on Tuesday, January 8, 2013 at 8 p.m. ET/PT on ABC Family.

Source: @Kockenlocker

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