The girls are facing a fate worse than death, summer school; Millwood High isn't the only thing killing the buzz, there's a new horror villain in town.
The identities of the PLLs are leaked online and the girls rush to find out who is behind the anonymous calls as they keep Mouse's surprise party under wraps; the night of the party is near and Tabby uncovers a disturbing secret.
Still shaken after her encounter with Bloody Rose, Mouse searches for the real Rose Waters while Imogen monitors Dr. Sullivan, Tabby works on a new project, Noa takes a break, and Faran faces an ultimate test.