Even before viewers tuned in to tonight's summer finale of Pretty Little Liars, the network promised a tragic ending to a somewhat lackluster first half of the season. They advertised this heart pounding episode as the fatale finale, and that about sums it up. After the Liars band together, siding against Alison (Sasha Pieterse) in a valiant effort to make things right and protect themselves (err, mostly the latter), they needed some reinforcement. The ideal ally is Mona (Janel Parrish), but despite her bravado, Ali is one fear she was never able to overcome - no matter how she dressed it up - even in the end.