The girls are ready to say goodbye to Alison as her memorial service approaches. However, Alison's brother Jason shows up and the gang quickly finds out that saying goodbye is the last thing he wants to do. The clique wants to celebrate Alison's life in a peaceful and positive way, but with Detective Wilden back on the scene and Jason taking over the girls realize they may not have prepared for what is to come.
Never trust a pretty girl with an ugly secret. Gossip thrives amid the Mercedes-Benz, mega mansions, and perfectly manicured hedges in the exclusive town of Rosewood, Pennsylvania. Everyone has something to hide. Based off the book series of the same name, the series follows four estranged best friends Spencer, Hanna, Aria, and Emily who are reunited after their best friend and queen bee of the group, Alison, goes missing only to discover they are receiving messages from an anonymous "A" who knows all their secrets.