Fiona's choices rattle a decades-long truce between the Salem witches and Marie Laveau. The Council of Witchcraft pays a surprise visit to the Academy with disturbing allegations.

Oliver discovers a man who goes by the name “The Mayor” is bringing illegal guns in to The Glades, so Oliver sponsors a “Cash for Guns” event to help clean up the city. Unfortunately, The Mayor crashes the event with his gang and seriously injures Sin. The Canary is furious when she learns her friend is in the hospital and sets out for revenge. Meanwhile, Felicity stuns Oliver with a bit of information about the Canary, Donner asks Laurel to dinner, and Diggle reconnects with an old friend.

When the BAU investigates victims of possible ritualistic murders in Utah, clues lead them to believe that the unsub they are looking for might have a fascination with the Salem Witch Trials. Also, Garcia prepares for a "Day of the Dead" celebration at her apartment.

The CSI team investigates the death of a homeless man who had a huge winning streak at a small casino.

After creative differences over what constitutes tasteful nudity cause Frank to pull his money out of "Lethal Weapon 6" during filming, Mac, Dennis, and Charlie screen their rough footage for investors in hopes of raising enough capital to finish the production of their latest masterpiece.

A new vampire confronts his cohorts on their fashion choices, roommates have a meeting about paranormal pranks, and a hotel guest goes apes**t over the continental breakfast.

From "The Millers", actor Will Arnett; author of "The Soundtrack of My Life", Clive Davis; musical guests The Avett Brothers.

Rayna sets the record straight on all things personal and professional in a candid interview with ABC News’ Robin Roberts. Determined to be her own boss, Rayna attends the Belle Meade Polo Match to seek out investors for her own label, Highway 65, but is surprised by the reaction from Nashville’s elite. Meanwhile, Juliette, who is also at the event, runs into Charlie Wentworth, and Luke Wheeler and Deacon have an awkward encounter. With her life about to change dramatically, Scarlett leans on Avery for advice, and Teddy announces to the press that he and Peggy are getting married.

When Ike hits puberty, he and Kyle start to grow apart. To save their relationship, Kyle takes Ike to see a live performance of Yo Gabba Gabba.

Shepard Smith battles digital addiction, and Jack Andraka shares his passion for science.

From "The Price Is Right", host and actor Drew Carey; Univision news anchor Pamela Silva.

Pete's lineups at work are out-performing his fantasy roster. Andre makes a trade with Jenny that could threaten his career. Rafi and Taco try to cash in on Kevin's mortality.

Sue holds a seance with her friends; the football team stops Axl from attending the Halloween party in his room; the family tries to give Brick advice about girls.

There are culinary tricks and treats when the chefs must cater a Halloween party for actress Lea Michele.