Pretty Little Liars

Season 1 Episode 20 - Eps 20: Someone to Watch Over Me

Predicated to young adult novels by Sara Shepard's Pretty Little Liars series, the series follows the lives of 4 girls -- Spencer, Hanna, Aria, along with Emily -- whose clique drops after their queen bee, Alison's disappearance. One year after they begin receiving messages from someone using the name"A" who threatens to expose their own keys -- including long-hidden ones they thought just Alison knew.