Pretty Little Liars (2010) (TV Show)

Pretty Little Liars is an American teen drama mystery thriller television series developed by I. Marlene King. The series, loosely based on the novel series of the same name written by Sara Shepard, follows the lives of five best friends whose clique falls apart after the disappearance of their leader Alison. One year later, the estranged friends Spencer, Hanna, Aria and Emily are reunited as they begin receiving messages from a mysterious figure named "A" who threatens to expose their deepest secrets. The series features an ensemble cast, headed by Troian Bellisario as Spencer Hastings, Lucy Hale as Aria Montgomery, Ashley Benson as Hanna Marin, Shay Mitchell as Emily Fields, Sasha Pieterse as Alison DiLaurentis and Janel Parrish as Mona Vanderwaal.