After living in Iceland in the year following her friend's disappearance, Aria Montgomery returned to Rosewood in the series premiere.
She's no longer tight with her old friends, but A's mysterious messages bring them together again. Aria's family also has many secrets of its own, as she's close to her mother, but her father had an affair that Aria knows all about.
Within the first few minutes of viewers meeting Aria, she's making out with an older man that turns out to be her high school teacher. Nice!
Alison: It's like you went to sleep one night and forgot who I am.
Aria: I know exactly who you are. A.
Alison: Stop saying that.
Aria: Why should I? You're A! You stole the game from Mona and then you killed her because she had proof.
Mona: Which one of you girls is best at hiding the truth from someone who's close to you?
Spencer, Hanna, and Emily: Her!
Aria: Wow, thanks guys.