Wolfgang may have found a new recruit, while an agent has been arrested overseas and Dee gives Rufus a gift.
While in Hawaii for Elena and Preston's vow renewal, trouble is brewing in paradise not only between the girls, but also with their significant others. Tonya is caught between taking her relationship with Jaa to the next level, or breaking up. Matt crosses the line with some of the women, and later Elena's desire for the dream wedding she never had quickly becomes a nightmare.
When three restaurant workers are killed in a robbery/homicide in Las Vegas, N.M., the BAU looks at a cold case that happened in the town six years ago for leads.
Josh explores the ocean floor of the Cayman Islands and the coasts of North Carolina in his quest to find the lost treasure of the legendary pirate Blackbeard.
While Rowena tries to consolidate her power to protect herself from the Winchesters, Sam and Dean search for a missing baby connected to the Darkness. Meanwhile, Castiel struggles to heal and Crowley tries to find a way to use the Darkness for his own personal gain.
Upset by Barry's insecurity in their relationship, Lainey sets out to teach him a lesson with Erica's help. However, the situation turns into something totally different and Barry goes to school dressed like Boy George hoping it will change. Meanwhile, Beverly doesn't approve Murray's new mustache so she shaves it off but it backfires.
Max uses Phoebe to help retrieve his chronicle of evil deeds from the school's confiscation closet, but breaks her trust to pull off his plan.
While visiting a pharmaceutical lab on a murder case, Abby is trapped with no communication to the outside world after armed men take over the building and hold everyone hostage.
When Barry and the team find out Captain Cold has been kidnapped, they form an uneasy alliance with his sister, Lisa. However, Barry feels double-crossed when he finds out Snart is working with his father, Lewis Snart on a heist. Meanwhile, Joe is faced with a difficult decision.
Liv eats the brains of a recently murdered trophy wife who was pushed to her death from the balcony of her stunning architectural home in the hills by a hired hit man. A Pinot Grigio-sipping, suddenly fashion obsessed Liv and Detective Babineaux begin questioning suspects in their search for the original brains behind this murder. Meanwhile, Liv and Ravi are surprised to learn that Peyton has returned to Seattle.
Santanico confronts Malvado with Seth's help; Richie and Kate must stop Carlos and Scott from overturning the ancient prophecy and taking control of a powerful evil.
While Camille preps for her annual Halloween bash, the Stitchers team investigates the suicide of a young man, who may have abducted a missing college student. The stitch leaves Kirsten spooked, and she begins to worry she’s being haunted by him as they race to find the missing girl.
A brandy-soaked wake up call; cat dancing; a life-or-death secret recipe.
Special Agent Pride is sent a partner from the Australian Defence Force Investigation Service, Special Agent Naomi Parsons, after an Royal Australian Navy Lieutenant, who was key to international negotiations on nuclear weapons, is murdered in New Orleans.
The streets of Hell's Kitchen run red with the blood of the Irish Mafia, as the west side war comes to a head. Muldoon treats Christine to a night on the town, and makes a decision. Duffy gets surprising news from Deirdre. As Bullman's feelings for Fortune intensify, he's forced to make a decision about their relationship.
Al and Gord work to rescue a loaded semi that's teetering on the edge of a 300-foot drop. Colin faces a white-knuckle drive on a remote Alberta back road, and Jamie tests out a new driver, who might be in over his head.
Boden's job is on the line pending an internal investigation. Severide adjusts to Patterson, his new commanding officer. Dawson shakes things up at the work. Casey searches for important evidence in his investigation of Nesbitt. Herrmann tries to keep the peace with Molly's new neighbors.