A popular quintet, turns into a quartet when the leader of a group of mysterious girls go missing . Her name was Alison... Alison Dilaurentis. The girl identified as a keeper of secrets hidden by, Spencer Hastings, Emily Fields, Hanna Marin & Aria Montgomery! After queen B Alison goes missing the four lost girls are targeted by a faceless nameless monster out to share and destroy! Two can't keep a secret, if one of them is dead!