13. Pretty Little Liars (ABC Family)
Stars: Troian Bellisario, Ashley Benson, Shay Mitchell, Lucy Hale, Tyler Blackburn, Ian Harding, Laura Leighton, Chad Lowe, Holly Marie Combs, Janel Parrish, Sasha Pieterse, Keegan Allen
Premiere Date: June 11
Hurry the hell up and catch up to Pretty Little Liars! At this point, there have been too many back-stabbings, failed relationships, mysterious figures, and an unconnected clues to recount in one paragraph. Considering the show has already been renewed for season five, without the fourth having aired yet, the glossy thriller, which follows four BFFs trying to track down the murderer of their Queen B, in addition to their own cyberbullies, is a must-see, even if only to be a part of the social media frenzy it starts every night it airs.