Get ready for more twists and thrills in season four of Pretty Little Liars as the girls strive to make sense of the mysterious "Red Coat" and what plans he or she may have in store for them. Starring Troian Bellisario, Ashley Benson, Tyler Blackburn, Lucy Hale, Ian Harding, Laura Leighton, Shay Mitchell, Janel Parrish and Sasha Pieterse, catch another "A"mazing season right here.