The friends probe a stalker and murderer mystery, facing tested loyalties and emerging secrets. A harrowing incident makes them doubt their safety and the stalker's identity, blending past and present as stakes escalate.
Tommy, Hailey and Stacey end up in an abandoned theatre while looking for Deena. Meanwhile, Summer and Isaac learn about Amy, Tyler and Tobey's past, as they figure out where their friends might be.
Days after the nightmare the teens experienced, it looks like they've found some sort of peace. The killer is dead, or so everyone thinks. An old face returns and tension arises.
Stacey's party doesn't go as planned. Someone cut the lights and the group starts worrying after getting creepy messages. The killer is back, ready for the finale.