Pretty Little Liars is a 2010 English-language Drama Mystery series created by I. Marlene King. The series was Produced by Lisa Cochran-neilan, Maya Goldsmith, Carol Dunn Trussell, Bryan M. Holdman and Hynndie Wali under the banner of Warner Horizon Television in collaboration with Alloy Entertainment, Long Lake Productions and Russian Hill Productions. airing on ABC Family / Freeform. Set in the fictional town of Rosewood, Pennsylvania, the series follows the lives of four girls, Aria Montgomery, Hanna Marin, Emily Fields, and Spencer Hastings, whose clique falls apart after the disappearance of their leader, Alison DiLaurentis. One year later, the estranged friends are reunited as they begin receiving messages from a mysterious figure named A, who threatens to expose their deepest secrets, including ones they thought only Alison knew. At first, they think it's Alison herself, but after her body is found, the girls realize that someone else is planning on ruining their perfect lives. Pretty little liars stars Troian Bellisario, Ashley Benson, Holly Marie Combs, Lucy Hale, Ian Harding, Bianca Lawson and John O'brien. The series is based on Pretty Little Liars by Sara Shepard. The music was composed by Michael Suby. Cinematography was done by Dana Gonzales, Larry Reibman, Buzz Feitshans IV and Geoffrey Haley. The show has a running time of 41-45 minutes for each episode. The show has a total of 160 episodes during it's run of 7 seasons. Distribution rights for the show were acquired by Warner Bros. Television Distribution.