Is Mrs. DiLaurentis "A" on Pretty Little Liars?

On Pretty Little Liars, there have been more twists and turns than we can count - especially when it comes to "A" suspects. At various points throughout its four seasons, we've thought Mona, Spencer, Toby, and Ezra were on the "A" team or even "Uber A," but time after time, the show has fooled us. However, in last night's episode, one major suspect emerged: Jessica DiLaurentis. Mrs. D has been on some theorists' radars for a while, but now Ezra - who we recently discovered has been penning a nov...