In this week's Pretty Little Liars TV, Heather gives her take on Monday's episode, "Know Your Frenemies." Check out her rundown of the night's big reveals (lots of shockers!), including one of the biggest surprises of the night -- A having Aria's back, despite her usual attempts to ruin the girls' lives. Is A coming around, or does she have bigger plans of sabotage in store? We're willing to bet on the latter. From Hanna's painful trip down memory lane to Emily's mother's desperation for some so-called "normalcy" (even if it means ruining her daughter's newfound happiness by ridding her of Maya), this episode definitely had its dark moments. For Heather's full review, check out the video in the link below!