Goodbye fab four, hello fierce five? (And no, we're not talking about those bubbly gymnasts — although Spencer could totally rock McKayla Maroney's "not impressed" face.) When Pretty Little Liars picks up in Season 4, there will be another Little Liar on the hunt for Red Coat's identity: Mona (Janel Parrish)! 

As we’ve heard before, Mona is very much Team Liars when Season 4 begins, and Janel told OTRC.com it’s not all an act: "Mona is now forced into joining the Liars, that's why the tag for the poster is 'Liars Unite.' Whether they like it or not, they now need each other. Is she ultimately good or bad, that's the main question, but does she need to help the girls? Right now, yes."

Apparently, Mona is still recovering from the shock she got in the Season 3 finale in learning she was not the puppetmaster, but another puppet: "I think the most shocking scenario of Season 3 for Mona is finding out that this entire time she was not, in fact, in charge, and she has no idea who this person is that she's apparently been working for."

We can’t wait to see the aftermath of that reveal for Mona in Season 4. An anxious Mona is always a fun Mona to watch!

How long do you think Mona will stay “good”? Let us know what you think in the comments below!

Pretty Little Liars Season 4 premieres on Tuesday, June 11, 2013 at 8 p.m. ET/PT on ABC Family.

Crystal Bell is an editor at Wetpaint Entertainment and our resident fan-girl for all things Pretty Little Liars, The Vampire Diaries, Game of Thrones and Once Upon a Time. She speaks fluent geek. Follow her on Twitter and Google+!