PRETTY LITTLE LIARS

The series follows the lives of four teenage girls - Aria Montgomery, Emily Fields, Hanna Marin and Spencer Hastings - whose group is torn apart after the disappearance of their leader, Alison DiLaurentis. Three years later, after the discovery of Ali's body, they begin to recieve text messages from an anonymous source, 'A', who threatens to expose all of their secrets - including historical ones that they thought only their close friend Alison knew.