Ned, Emerson, and Chuck's next case involves an olfactory assistant who was killed when her scratch-'n'-sniff book combusted.
As a team member fights for life, the BAU continues the search for an attacker that leads the unit to believe the assailant could be someone close to the investigation.
Wolfy keeps tricking him and Pig had enough. They travels to the Little Red Riding Hood book. The super readers met Red's grandmother and the Wolf in the book. The Super Readers have discussions about the book.
What would otherwise be a happy wedding goes sour when the groom... turns up dead: inside a wedding present. After Stella finds bloody puzzle pieces inside a box on her car, Mac heads home to Chicago to solve what could be the murkiest mystery of his life.
It's a bright, sunny day on the Mali-U campus. As Sam, Clover, Alex and Britney stroll across the quad, they suddenly hear a strange sound. "Woohp! Woohp!" To their utter shock and surprise, they look up to see a group of students doing what appears to be the officially sanctioned WOOHP workout routine! Incredulous, they ask what's going on. That's when Mandy and Mindy tell them: "Duh. It's only the latest workout craze!" When the girls tell Jerry what's going on, he's equally as surprised and concerned. In a b-story, with Britney being drafted back into the team again, Alex's jealousies return.
Thanksgiving has arrived and Nick George wants to spend the day with his wife and daughter, but Tripp has another idea. Tripp wants Nick to set up a meeting with Simon Elder so Tripp and Simon can talk face-to-face once and for all. Meanwhile, Letitia helps Karen try and to get closer to Nick. Brian fights to keep his ex-girlfriend, Andrea, from taking his son away from him while Jeremy goes on a first date with Sofia.
The designers are asked to create a two-piece garment for Sarah Jessica Parker's "Bitten" line. After pitching their designs, Parker chooses seven who will be team leaders, working in teams of two to create the design. They have $15 and one day to complete their look.
Tired of being considered a "goody goody" by the popular kids, Susie tries desperately to prove that she can be a bad girl.
Cooper returns to the online dating game with surprising results, Addison goes on a date with one of Violet's patients, and Naomi and Sam make a house call at a convent.
George is tired of the same old tub toys. When he tries some new toys in the tub and drains it afterwards, all of the toys get washed down the drain! After trying to fill the tub with water again it backs up. The Man decides to call his plumber who always fascinates George with his work. The plumber fixes the clog and leaves, and the Man also leaves, to buy George some new bath toys. Afterwards, George is faced with another clog, this time in the dishwasher and decides to fix it himself, dismantling not only the plumbing in the apartment but also in the basement. After turning the plumbing back on, George winds up flooding portions of the apartment building.
After the body of an archbishop is found, missing the kneecaps, the team concludes the murder is related to the Widow's Son case.
Detectives find themselves embroiled in the world of ultimate fighting after a young girl's death.
A live TV broadcast announcing the new peace accord between the UK, US and Iran is hijacked by armed gunmen. Can Adam and Ros defuse the situation before someone's hurt?
A series of unfortunate events unfold for an unlucky Dawn Budge, who seeks reparative surgery from Sean and Christian. Annie and Eden start to form a sisterly bond, which unnerves Sean.
When Princess Pea fears of passing a Princess test, there's only one thing to do: The Super Readers travel into the Princess and the Pea book. Can they solve Princess Pea's problem?
Charles goes undercover among gang members from his old neighborhood when it's discovered that they've been stealing explosives and weapons. Meanwhile, Tiffy gets hurt at work and Mack goes after her attackers.
House treats a magician but comes to believe he's faking illness to cover up his own incompetence. Meanwhile, House pits the fellows against each other in his version of an immunity challenge.
Phil has a crush on Lil's best friend and soccer teammate Wally they start hanging out more often, making Lil feel out of the loop. So Lil develops a plan to pull them apart. Phil and Wally's relationship fell apart when Lil told Wally that he does not like her. When Phil finds out that Lil lied to Wally, he becomes upset at his sister.