While Alicia rejects Will's advance and stays with Peter, a judge appoints her as counsel for a man accused of killing his business partner. Meanwhile, Lockhart and Gardner find a new, young and ambitious name partner.
While a viral video damages Peter's campaign, Cary exploits a legal loophole and force, Alicia and Will to defend a murder suspect in military court, and Will and Diane weigh the pros and cons of taking on Lou Dobbs as a client.
The firm takes on a case involving a son whose father died as a result of a sniper trial in which he was acquitted. Meanwhile, Alicia's gay brother comes to town and makes trouble for Peter's campaign.
While Alicia defends a security company being sued after a fatal rave stampede, she is accused of leaking her deposition of Glenn Childs to help Peter's campaign. But could it really be the work of an unnamed third candidate?
The firm does some makeshift, last-minute investigating in order to decide whether to defend a masseuse accusing a beloved Nobel Prize winner of sexual assault, but the accused tries to use Peter to sway the firm's decision.
The firm takes on a test case which could lead to a class-action suit against a pharmaceutical company, a dirty trick against Wendy Scott-Carr backfires for Florrick and Childs' campaigns, and Blake and Kalinda step up their rivalry.
Alicia defends a former teen star against charges of attempted murder. Wendy Scott-Carr launches an all-out assault against Peter's vulnerable campaign, while Peter considers a sweetheart deal to drop out of the race.
Alicia discovers new information about Eli Gold and Will's feelings while listening to wiretap recordings for a case about a corrupt alderman, and Zach hurts his dad's campaign by producing a viral video.
While Peter prepares for his debate, Alicia and the rest of the firm work overtime amending a last-minute appeal for a death row inmate after Alicia receives a cryptic call from an appeals court clerk.
The firm tries to get a client's son to turn on his girlfriend when they both face murder charges, Alicia's brother comes for a surprise visit, and Will finds out that Diane is planning to break away from the firm.
A basketball grudge between Will and a judge could cost Will's client a shot at a fair trial, a new consultant threatens Eli Gold's control over Peter's campaign, and the power plays within the firm become complex and nasty.
As Cary and Alicia go head to head again in a prison murder case, Cary uncovers an unlikely connection between the accused and one of Bond's clients. Meanwhile, a dirty campaign trick could backfire on Peter's campaign.
While battling an old rival to gain control of a class-action lawsuit, Alicia, Will and Diane discover that a traitor is in their midst. Meanwhile, the Florrick campaign tries to find a way to win the youth vote.
Will and Diane take on a movie studio and screenwriter accused of defamation against a famous computer programmer. Meanwhile, Diane contemplates her relationship with Will on a cross-country trip, and Blake and Kalinda come to blows.
Diane defends her erstwhile love interest, Kurt McVeigh, when he faces a law suit from a convicted criminal who has now been released when his lawyer shows the police and the crime lab manufactured evidence. They go after McVeigh in the belief that he too was part of the conspiracy. To get the case thrown out, Diane will have to show that he made an honest mistake. Meanwhile, Eli Gold thinks he's found the silver bullet in Peter's campaign against Wendy Scott-Carr: it appears that the she hired an illegal alien, Natalie Flores, as a nanny. She's been living in the U.S...
As the vote to determine the fate of the firm arrives, Lockhart, Gardner, and Bond make final maneuvers. Meanwhile, the firm takes a case involving the Internet and human rights, and Peter's campaign tries to take out Glenn Childs.
Alicia helps Bishop with his divorce and custody settlement, and helps Kalinda after she is subpoenaed to appear in front of a grand jury. Meanwhile, Eli changes Peter's campaign strategy to appeal to white, middle-class voters.
The firm takes a case involving a killer who allegedly wrote a song about his crime, Eli tries to help the family of Wendy Scott-Carr's illegal nanny, and Peter takes steps to keep his and Kalinda's secret from going public.
To Lockhart/Gardner's disbelief, Louis Canning returns to face off against Alicia once again when the firm represents families of workers who committed suicide due to miserable working conditions. Meanwhile, Cary finds out shocking information about Kalinda.
On the eve of the election, Eli tries to persuade Alicia to conduct an interview on behalf of her husband. Meanwhile, Lockhart Gardner is forced to work with Fred Thompson and the Venezuelan government on an oil case.
After Peter wins the election, Alicia kicks Peter out of the house because of his affair with Kalinda. Meanwhile, opposing counsel in an organ transplant case suddenly asks Will to represent her when her firm fires her.
Alicia is assigned to defend a woman who is being sued by a widow whose husband was murdered by someone he met on the defendant's website. Once again, Alicia and Will are up against the somewhat ditsy Nancy Crozier. When her case turns to accusing the defendant of murder - and Carey Agos takes an all too obvious interest in the civil proceedings - Alicia and Will realize they have to change their strategy. At the office, Alicia lays it on the line with Kalinda, who decides to get a job elsewhere.
Lockhart Gardner is in a race against time after new evidence in a murder trial is discovered during jury deliberations, Eli Gold offers his consulting services to the firm, and Alicia and Will reevaluate their working relationship.