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.
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.