In the mid-season premiere of "Pretty Little Liars" entitled "She's Better Now," Radley Sanitarium has given Mona a clean bill of health and she is headed back to the halls of Rosewood High, much to the Liars dismay. With their former tormentor now back in their everyday life, Aria, Emily, Hanna and Spencer take very different views of the "new" Mona. Sure she made their lives a living hell, but is she really cured? And what other secrets could she be holding onto? It is up to Mona to prove to the Liars if she has changed or not.