Set in the small town of Rosewood, PA the series follows the lives of four girls, Spencer Hastings, Aria Montgomery, Hanna Marin, and Emily Fields, whose clique falls apart after the alleged murder of their leader, Alison DiLaurentis. One year later, the estranged friends are reunited as they begin receiving messages from a mysterious villain named "A" who threatens and tortures them for the mistakes they've made before and after Alison was alive. 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 lives.
