So, should the Liars give Mona a second chance? After all, as she points out in this sneak peek, she did help Emily figure out what happened to Maya (Bianca Lawson) by telling them about the website. And, as she says in that sneak peek, she's "better now," or at least pretending to be.
On the other hand, she was pretty darned unhinged before, and we don't exactly trust the docs at Radley to make an accurate assessment of her mental health.
What do you think? Let us know with the reaction buttons, and sound off in the comments below.