Beset by visions of a terrifying future, Cordelia lets Michael attempt the Seven Wonders. A wealthy new student joins the coven. John Henry's suspicions are short lived. Michael's test brings back a familiar face along with a chorus of warnings.

When Katie's mom, Kathryn (Wendie Malick), comes to town, Katie and Kathryn encourage the kids to make less than favorable decisions: Oliver cheats in shop class and Katie helps him try to get out of it, while Kathryn reassures Taylor that she doesn't need to go to college.

Chief Boden becomes increasingly skeptical of Assistant Deputy Commissioner Gorsch’s motives, while Severide gets wrapped up in a difficult situation following the rescue of a child from a car wreck. Trying to fit in with the rest of the firehouse, Foster is tasked with doling out some personal advice to Cruz.

When the mummified remains of numerous victims are found in the walls of an elderly couple’s remote South Carolina home, Rossi, J.J. and Simmons are dispatched to track down a trail of clues that date back over 20 years. The hunt becomes urgent after BAU learns the killer has a specific ritual of when to strike, and like clockwork another person goes missing. Also, Rossi reconnects with his ex-wife, Krystall.

Cookie and Lucious push to get back in the music game, but they’ll need the whole family and some old allies to make serious sacrifices in order to do so. Meanwhile, Andre finds a risky way to make a name for himself among his fellow inmates.

Jimmy Buffett is in town and the positive vibes are alive at the bar, but when Mac comes out of the women's bathroom, no one can leave until the bathroom situation is solved.

Phil stumbles into an exciting new career after dropping by Luke’s college. Claire deals with her dad, Jay, and the merger of Pritchett’s Closets with a tech-savvy, hipper company. Mitch’s new high-profile case as an assistant district attorney is marred by an unflattering courtroom sketch by the resident artist.

Mr. Hankey must defend his character or lose everything that is important to him. Mr. Hankey’s offensive behavior puts him in jeopardy of being fired as the Director of the Annual Christmas Pageant. Meanwhile, at South Park Elementary, Strong Woman and PC Principal face a whole new set of challenges in their relationship.

Actor Timothée Chalamet; actress Amandla Stenberg; journalist Guy Raz; Ella Mai performs.