Fiona helps Zoe and Madison deal with a horrible tragedy. Delphine LaLaurie struggles to adjust to modern life. Cordelia faces a dark decision about her family.

Oliver finds out the medicine that is being sent to Glades Memorial is being hijacked by thieves. Without an influx of supplies, the hospital will close. Roy attempts to stop the thieves, but he fails and is arrested by Officer Lance. Oliver gets into a heated battle with China White and her new partner, Ben Turner, AKA the Bronze Tiger, over the supplies. Meanwhile, Laurel makes plans to catch the Arrow, and Thea gives Roy an ultimatum.

The BAU meets their new section chief, Mateo Cruz, who, unbeknownst to them, shares a long work history with JJ. Cruz joins the team as they comb the streets of Baltimore for an unsub who leaves victims unable to communicate.

When contestants on a reality cooking show accidentally eat human flesh during a competition, the CSI team is brought in to investigate.

Dipper sets out to discover why a certain Gravity Falls resident always faces left.

When a severe flu outbreak sweeps through Philadelphia, the gang chooses to voluntarily quarantine themselves inside of Paddy's in an attempt to keep their singing voices pristine for an upcoming singing competition.

Keegan gets too high, a soccer player gets grievously injured, and an unwitting party guest wanders into an orgy.

TV host Bill O'Reilly; musical guests The Head and the Heart.

Investigation into the suspected rape of a woman Benson helped earlier leads to a cybermogul; the team bids farewell to Sgt. Munch.

The adults struggle to make it to a hot new restaurant in time for the reservation Jay pulled a lot of strings to get.

Rayna leaves Juliette in a lurch when she decides she needs to cancel the remainder of the tour. Teddy proposes to Peggy and asks her to be discreet around the girls, but when Maddie sees her grandmother's ring hanging from Peggy's neck, the charade is up. She is confused and hurt and finds herself turning to an unlikely friend. Tandy uncovers more troubling information about Rayna and her mother's death, but her attempt to share the discovery with Rayna is hijacked by Maddie's reaction to Teddy and Peggy's engagement. Deacon discovers that he has more in common with Megan than just his case.

From "The Crazy Ones", actor and comedian Robin Williams.

Andre takes a stand up class. Jenny joins a women's investment club. Pete plays Ruxin with two open slots on his team.

The chefs reinvent items on a worst food-trends list. Later, they must replicate dishes from a notable New Orleans restaurant. Guest judges: Paul Prudhomme and Tory McPhail.