Spencer and Asher are still feuding. Grace tells Billy Halloween vandalism has been an annual problem at South Crenshaw. She convinces him that it wouldn't look good if the school were to get vandalized before the vote for principal. J.J. is throwing a Halloween party in hopes of pulling everyone back together. Olivia tells her editor Cristelle that she won't turn in the Wade Waters article. J.J. wants to borrow the Baker house for his Halloween party, which is going to have a murder mystery set in the future as a theme. Layla checks in on Jordan, who brushes her off. Billy drafts Preach for Halloween guard duty. Coop convinces Asher to come to the party. J.J. gives them all character bios for their future selves to determine who killed Future J.J. Billy gets spooked by Grace, who comes to help out. Grace warns him that she's considering D'Angelo's offer to move to Oakland. Olivia keeps getting heavy-breathing calls. Olivia informs Spencer that she's writing a replacement article. He tells her that she didn't have to kill the Wade Waters article and they get into an argument. Billy keeps seeing someone running back and forth at the school. The custodian lays some wisdom on Billy. Spencer and Asher blow up at each other over their friendship. Amina had been running around as the Hallway Monster. Jordan admits to Layla that Simone blamed her for their breakup. Billy tells Grace she should go to Oakland. Grace told Billy the school board voted him in last night and hands him a nameplate. Olivia files her article. J.J. tells them that everyone killed him by letting their friendships fall by the wayside. Everyone makes up after J.J.'s blowup then applauds J.J. The party get raided by a police tactical team.