After a young violinist is shot to death, Patrick Jane questions the members of the Northern California Symphony Orchestra about the murder. Meanwhile, Cho crosses paths with a precocious young pickpocket.
As the paintball war is revealed to be a City College plot, Jeff and Troy vie for control of Greendale's ragtag army, while Pierce betrays the group.
Russell gets Timmy and to see if he can figure out why to Liz is attracted to the other man and not Russell. Jeff doesn't like the idea that Audrey is making almost the same amount of money as he does.
When Howard finally breaks the news to his mom that he's engaged to Bernadette, it lands her in the hospital.
Rogue sniper Jacob Broadsky returns once again, claiming another victim and making Booth determined to put him away once and for all.
Dwight takes charge of the office and immediately imposes his will on the staff. Gabe hopes to get back together with Erin.
Teo betrays Teresa and becomes a rat for the DEA, while The Mexican plans a shipment for the Russians.
The tables are turned in this week’s Quickfire when the cheftestants become the judges and have to critique their fellow chefs. Then in the Elimination Challenge, the remaining contestants are in for a double dose of surprises. Pop Rock group Maroon 5 drops by and challenges the chefs to create a feast fit for a rock star, but it's not that easy. Once again the tables are turned and the chefs are taken out of kitchen and brought to a surprise location to prepare their meals.
While Teresa is carried away by her sexual desire for Teo and tries to make a fresh start, an infiltrator marks the beginning of the end for The Mexican.
After the team botches their assignment to secure KFC's Secret Recipe, Oz orchestrates a team-building exercise, trapping the gang inside Contra Security over the weekend, forcing them to work together in order to break out of the office. Cameron's feelings for Melanie come out in the open, and Cash becomes jealous when Josh dates a co-worker.
When the BAU is called to Florida after bodies are discovered buried in the ocean floor off the Jacksonville coast, the case hits home for Morgan because his aunt fears her missing daughter could be one of the victims.
Jay advises a dog trainer, while Phil and Claire switch parenting duties to the kids' chagrin. Mitchell has an extra Lady Gaga ticket when Cameron ends up sick.
The Prince of Canada is about to take a Princess and Ike is obsessed with the Royal Wedding.
Wright becomes personally involved in a case when a young woman is found raped and murdered after getting into a taxi. As a young cop, Wright investigated and charged rapist Roman Wisniewski with sexual assault. He walked through the help of a QC. Now Wright has a chance to put him away for a long time. Wisniewski says he is innocent. But when another victim comes forward, and identifies Wisniewski, it seems as if Wright is right. Wright tries to persuade the victim to go to court to help in a successful prosecution. Keep the bastard off the streets. But there are problems in mounting a case against him, like lack of evidence, and Malik fears Wright’s vision is stopping her from seeing the truth. Wright and Wisnieski go to war. And with it, comes destruction and pain. And as in any war, there is no winner. Meanwhile, Malik works to find the gang responsible for the armed robbery. Hunter is in remand, waiting sentence for the murder of two drug importers. Kimberley, a clerk at the Security Company, which was robbed, takes Hunter a message. Something is up, but what? And can the cops break a woman in love?
The Red Cell team is asked personally by FBI Director Fickler to find the estranged daughter of a federal judge, who is his longtime friend.
Adam and Jamie put Hollywood sound effects up against reality, and Kari, Grant and Tory find out if you are adrift on a sailboat with no wind, can you propel your boat with a fan?