When Sherlock investigates what appears to be a series of murders at a top Wall Street firm, he may himself fall foul of a sociopathic slayer. Joan is set up on a blind date and shows investigative instincts.
Lola has no friends or pets so she gets a law degree and defends Owen.
A new job offer for Ben causes Leslie to contemplates their future. Meanwhile, Ron and Andy take Diane's girls out trick-or-treating, and Tom searches for a new business idea.
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.
The gang make a disturbing discovery after crashing Maureen's wedding.
Cat is placed on leave after interfering in a murder investigation. Meanwhile, J.T. fears that Vincent will become exposed.
When Leo is given the task of making a Death Mask of the old Duke, he soon realises the story of his death doesn't add up and begins a dangerous investigation...
After failing to get Chris's attention, Reagan worries that she is losing her romantic touch. A visit to the dentist gives her a much needed confidence boost. Meanwhile, when Ava learns her neighbors aren't so fond of her, she teams up with Walter to give the neighborhood a haunted house like they have never seen before.
Anna and Frank are intimidated by the renovation process. They’ve tried to tackle projects on their own, but backed away once they hit a snag.
Tritannus raids King Neptune’s underwater palace and transforms his whole mer family into mutants. Then, thanks to the dark magic of his trident, he manages to absorb all of the magical strength and energy of his father, King Neptune’s, mystical sword. Meanwhile, the Winx Club get a second clue to Sirenix which leads them to Musa's home world, Melody, busy searching for the second gem, the one of Empathy. During a fight with Tritannus, Musa is hit by a powerful dark spell and transforms into a terrible monster, bent on destroying the Winx. The Trix arrive with Tritannus on daphne`s doorstep and force her to tell them about Sirenix.
Notorious filmmaker Joe Francis is in town as Lisa hosts a lingerie party where half-naked Miami socialites start acting as naughty as their underwear.
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.
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.