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The release of Mona. According to the official synopsis of the episode, Mona (Janel Parrish) is out of Radley and back at Rosewood High in the premiere. Yep, somehow the first "A" convinced the good folks at the mental institution that she's sane enough to go back to the school, where she stalked and tortured her friends. It's really good for the "A" Team that all of the professionals in Rosewood appear to be incompetent.
Mona and ... Jason? Why are Mona and Jason (Drew Van Acker) hugging in this sneak peek photo? And why is Spencer worried about Jason in this sneak peek? Marlene King teased that "[Mona] will need some guardianship back in sort of the Rosewood world, and we might find that Jason takes her under his wing a little bit."
And Ezria? Based on this sneak peek, we know Aria still hasn't told Ezra (Ian Harding) about his son. So how do you explain this sneak peek photo?
More about Lucas: According to showrunner Marlene King, we're going to learn more about what's going on with Lucas (Brendan Robinson) in the premiere. She also says that "Lucas sort of cracks" over the course of the season, so hopefully we'll see the beginning of that.
Other key info: We will get an "idea" about who attacked Aria in the Halloween episode in the premiere.
A creepy scene ... on a bed: This episode is going to feature a creepy scene on a bed, whatever that means.
Hanna's grandma is back. Hanna's hilarious and awesome grandmother is back, which means the episode will definitely be funny as well as creepy.
So is the creepy motel guy: Remember that creepy guy who ran the front desk of the Lost Woods Resort? Well, he’s back.