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.
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.
The boys plans to go as the Avengers for Halloween go awry when Randy can’t go at the last minute and Stan has to help his father with a new business venture.
Rayna learns her family is facing financial ruin; Juliette asks Deacon to write and tour with her exclusively; Juliette's mother re-enters her life.
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.
When a famed music historian is murdered and left in a piano, it has an emotional effect on Sanders, who had a past with her.
After fighting off the Stone Army, the ninjas arrive at the Temple of Light and harness their pure elemental powers, concentrating them onto Lloyd.
When Tessa convinces Delia and her friends to think up feminist-inspired Halloween costumes, she attracts the attention of the Chatswin witch; Noah and George dress as each other; George misunderstands when Dallas asks him out.
Dom receives a disturbing text from an ex-girlfriend, who appears to be in desperation, so he turns to Frank for help. Meanwhile, Lillian discovers her girls have been servicing a judge.
Recipes include the queen of puddings, chocolate tea cakes and jam doughnuts.