It's Halloween in the office and Andy invites his college a cappella group to perform, which leads to a confrontation with his frenemy Broccoli Rob. Meanwhile, Dwight finds evidence that a madman is loose in the office and tries to track him down, and the first meeting of Jim's new job causes a fight with Pam.
Lola has no friends or pets so she gets a law degree and defends Owen.
When a legless body is found in the New Mexico desert and a second unwilling amputee shows up at the hospital, the BAU team searches for this amateur surgeon before he preys upon his next reluctant victim. Also, Reid's phone calls to a mystery woman have the team intrigued.
An exorcist is called to Briarcliff to help save a troubled farm boy; Sister Jude's darkest secret is revealed.
Oliver is surprised when someone shoots and kills one of his targets. As his plan is to bring people to justice vs. outright killing them, Oliver doesn't appreciate the help and searches for the gunman. He soon learns that the man, Deadshot, is taking out businessmen who are scheduled to bid at an auction on an energy company and Walter is one of the bidders. Realizing he can't protect his family and stop Deadshot at the same time, Oliver enlists Detective Lance's help, but his plan has dire consequences. Meanwhile, Laurel and Tommy get caught in an awkward situation with Oliver.
Claire must reign in her enthusiasm for Halloween and keep her celebration kid-friendly; Phil decides to hold an open house on Halloween; Mitch and Cam have a costume party; Gloria's hormones make her more quick-tempered than usual.
Sam and Dean investigate a bizarre murder in a college town. Close on the tail of their suspect, they bust into an apartment to find two dead bodies and a laptop cued up to some disturbing video footage.
Sue accidentally runs over Axl's foot while practicing driving; Axl looks forward to voting; Brick binges on Halloween candy.
Casey faces pressure to cover for a cop's son, who was responsible for a drunken-driving accident that left a teenager paralyzed. Meanwhile, Severide ignores his doctor's warnings that his neck injury may never heal if he doesn't seek treatment; and Mills must choose between working at the fire department full-time or helping his mom with her restaurant.
Boog is ecstatic to meet the Chimp Chomp champion. However, the boys have to get Boog across the street when he has an allergy to their Man-Arctic Seal uniforms and is stuck in his childhood bubble.
Fanboy and Chum Chum find a Leprechaun in a box of cereal, but he refuses to give them the mystery cereal shape the cereal box promised.
The mystery surrounding the death of Alicia's father grows as Julio makes a new discovery. A man shows up at the hotel with strong connections to Andres.
In Memphis, TN, Lt. Caroline Mason revisits the 2007 homicide of a 19-year-old man shot to death during a street fight that got out of hand. But when 26-year-old DeMario Thomas went to trial in 2009, the victim’s mother surprised everyone. While in Louisville, KY, a prosecutor’s case comes close to collapse when an unforeseen twist of fate threatens to let an alleged murderer walk.
A musically-talented teenager returns to her native Buenos Aires after living in Europe.
Nik threatens to leave therapy because he feels Shayne is isolating herself and unwilling to take part in the process. Doug and Courtney get a wake-up call when Dr. Jenn decides to implement a new house rule.
Since arriving on Earth, the aliens - led by the Bird-Kersees - have viewed Halloween as a threat and have set up a barrier at the gates of Hidden Hills to prevent children dressed in costumes from entering the community. The Weavers, on the other hand, are excited about their first Halloween in the suburbs and want to open the gates of the community to celebrate. They do their best to explain the ritual of trick-or-treating to the aliens. Meanwhile, Marty and Debbie's fears are realized when Amber, Max and Abby reject their family costume plans.
Scammers may disguise as beautiful girls, harmless hawkers and friendly taxi drivers.
The Kratt brothers secretly “borrow” Aviva’s half finished night vision goggles to go in search of a mysterious nocturnal creature.
Pablo is a man with a natural ability for business. Early in his life, Pablo is introduced to the business of cocaine and the power it yields. A young life of crime lands Pablo in and out of jail as he builds his criminal empire. Pablo expands his power through politics but it is not long before his conflicts as a Congressman and a drug lord collide. Pablo has his enemies executed, but not before the United States activates its own war on the Medellin cartel.