Brennan's reliance on pure logic is challenged when she convinces the jury on which she is serving to acquit the accused murderer. When the man's closest friend is subsequently murdered, Brennan tasks the team to uncover the real killer, even if it means proving her wrong.moreless
Nikita and Michael hear about a new prosthetic hand that could allow Michael to return to his former self, but obtaining the hand will come at a steep price. Meanwhile, Alex and Sean work to track down the agents inside Division are beind a mutiny, which ends in bloodshed.moreless
Brennan's newest intern matches her intellectually, but his take on the evidence challenges her to stray from the scientific straight and narrow. Booth, meanwhile, worries her openness to borderline theories may affect his murder investigation.moreless
Birkhoff informs Nikita that Sonya is Amanda's mole and that not only has she reactivated Sonya's kill chip, but she has also placed a second mole in Division to keep track of Sonya's actions. Together, Nikita, Michael, and Ryan develop a plan to use Sonya to reveal Amanda's location, and Birkhoff sets a trap for the second mole. Meanwhile, Michael confronts Alex about her recent drug use, and Alex pleads with Michael not to tell Nikita about her relapse.moreless
The investigation into the mauled body of a day laborer at an animal expo leads the team to an animal trafficking operation, the operator of which is also the owner of the expo. Elsewhere, Brennan looks at a political career, while Sweets and Daisy face a major change in their relationship.moreless
A young video game inventor is being awarded to apprise overseas but his father whom he wants to sue for permission to go overseas by himself won't let him go. Kim has to help her father find a place to live after living in someone else's in house that he didn't have a right to live in. Jane comes very close to confirming what Grayson already found out about Jane being in debs body Luke has to try and stop her from letting Grayson know he was right.moreless
Another body is discovered in the woods. This time the investigation reveals the victim was part of a Hatfield-McCoy-type battle between two families. At home, Brennan's reluctance to accept her father's babysitting services means she must delve into her own family history to understand her feelings.moreless
Special Agent Genny Shaw pitches in at the agency with Booth, while Brennan reduces her activities – sort of – on her first day back to work when the team is asked to solve the case of an extreme couponer who was dragged to her death by a big rig. Elsewhere, Cam is unhappy with Michelle's involvement with Finn.moreless
Dr. Jack Hodgins from the Jeffersonian asks for Walter's help regarding extraterrestrial activity and a conspiracy theory. Elsewhere, Willa and Timo strive to deal with the news of their arranged marriage.
With Michael out of town, Nikita looks to Owen for help as she tries to steal another black box from one of the Guardians. However, she learns that Owen is working for an unlikely employer that could jeopardize her whole mission. Amanda discovers that Alex received some confidential information about Semak and that Percy must have been the one to give her that information. Furious that Percy undermined her authority, Amanda strips him of all his amenities. Back in Russia, Alex finally makes her move on Semak.moreless
A competitive eating champion's body is found shortly before the next major competition. Following a disagreement over the baby, Booth and Brennan attempt a little role-playing. Back at the lab, Brennan's new assistant seems a mismatch, despite his genius.moreless
When an expert horsewoman who ran a vocational program is murdered, the lead suspect is a woman in prison on drug charges. Todd doesn't react kindly when Megan takes Lacey to the crime scene, but the same can be said for Megan when Todd decides to take Lacey along on vacation with his new girlfriend.moreless
Jane represents the sorority mom she and Stacy had in college in a lawsuit against the casino that caused the sorority mom to suddenly lose all her savings. Kim and Parker represent a botanist who has fallen in love with a rare flower to even given a name now she is suing the museum for the rights to that procedure where plant.
Grayson still mourning the loss of his fiancée can't get out of his slump, Jane puts Fred in charge of getting Grayson out of his bad mood but Grayson and Fred manage to make the evening take an interesting turn that Jane doesn't see coming.moreless
A mysterious young deaf girl is thought to have committed a recent murder after she's found on the streets, covered in blood and holding a knife. It's up to the Jeffersonian team to figure out who this girl is and determine if she's really the one to blame for the murder.moreless
It's fashion week and Castle and Beckett get to see what happens in the background as they investigate the murder of a model.