A video of Audrey and Rachel kissing goes viral; Nina and her boyfriend Tyler are brutally murdered; Memories of a killing spree 20 years earlier haunts those affected, inspiring a new killer.

Another teenager's death raises questions, causing yet another rift between Emma and Audrey; Piper, a provocative podcaster comes to Lakewood to report on the town's murders.

Emma discovers that her mother is hiding a few secrets of her past and the killer challenges her to a dangerous game.

Emma gets a mysterious message which leads her and Audrey in search of answers.

When a scandalous video is leaked, Emma learns a heartbreaking secret.

Emma learns that the latest prime suspect is someone close to her.

Emma tries to save a friend from the killer's dangerous game of hide and seek before time runs out.

Emma is shaken by another death, and uncovers a secret from the past.

Mr. Branson is taken into custody, but Emma starts to suspect his innocence; Piper and Emma visit Brandon's mother; Brooke plans her Halloween after-party.