John receives an invitation to attend an exclusive Devil's Night Soirée. Alex tries to diagnose Holden's strange condition.

Laurel must deal with the repercussions of taking Sara to Nanda Parbat. Meanwhile, Oliver asks Captain Lance for a favor and while he’s not surprised at the response, he is surprised at what he finds out next.

Ever since he was a kid, Dre has loved Halloween. Now that he lives in one of those “good candy neighborhoods,” kids come from all over the city to trick-or-treat, including Dre’s own nieces and nephews. The cousins are known for roughhousing and The Johnson kids aren’t happy when they come around, but Dre feels his kids could use some toughening. Meanwhile, Dre gets a surprise visit from his own cousin, June Bug, who used to torment Dre as a kid.

Neal clashes with his neurosurgeon father over how to treat his gravely ill mother, whose mysterious symptoms force Angels Memorial to quarantine Trauma One.

When the BAU investigates incidents of bodies being incorporated into macabre graffiti art in Detroit, they suspect an elusive-yet-notorious street artist could be the UnSub. Also, Dr. Lewis struggles to balance her relationship with her fiancé and her work.

Keith is released from jail and moves back in with Ryan, Jay is given an intriguing offer by Garo, and Nate has his first fight back since he was brutally assaulted.

Juliette gets into a brawl with a fan that goes viral, but Jeff sees damage control as an opening for his own career. Maddie is grounded and misses Colt who is on tour with his dad. Markus butts heads with Rayna over his sound, and the two consider whether they can continue working together.

The news of a romantic relationship between Tweek and Craig hits South Park Elementary. Mr. Mackey tries to figure out who started the rumor. Meanwhile, Cartman, who struggles to understand his friends’ relationship, finds he has an admirer of his own.

Seen entirely from the point of view of the Impala, Sam and Dean go on a road trip to fight monsters and demons.

Andre joins a Korean church for the parking. Detroit wide receiver Golden Tate flips the script when he and Taco create a fantasy workplace league and draft the others.

Each member of the Heck family finds themselves in situations reminiscent of "The Twilight Zone."

Sandra Bullock (Our Brand Is Crisis (2015)). Also: Rod Stewart (album "Another Country") is interviewed and performs with The Roots.

Jimmy tries to stealthily help Gretchen with her depression by planning a Halloween-themed Sunday Funday.