Alicia, Will and Diane are caught off-guard when a brilliant disabled attorney (Michael J. Fox) uses his condition to sway a jury; Kalinda turns to a former friend for help.

While Alicia races against Louis Canning to round up the most clients for an Erin Brockovich-style class action lawsuit, a mole is detected in LGB law firm, who seems to be working for Canning.

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.

A routine arbitration turns into a battle of wills between Alicia and Louis Canning, but the pair makes an unexpected connection when a personal crisis interrupts the proceedings.

Alicia once again faces Louis Canning in court, but recent financial concerns lead her to reconsider his standing job offer. Meanwhile, Diane reconnects with the enigmatic Jack Copeland.

Will and Diane scramble when Louis Canning and Patti Nyholm team up to bankrupt the firm. Also, Alicia faces conflicted feelings regarding her relationship with Peter, and Kalinda's past catches up to her.

Louis Canning's attempts to delay a deposition could complicate Will's latest and potentially lucrative case; Diane and Will have a face-off with Clarke.

Alicia is presented with a career-changing offer that includes a substantial financial risk; Diane and Will confront their creditors; Eli and Jordan don't agree on a possible attack on Maddie's campaign.

Alicia and Diane consider merging their firms in the wake of Will's death, even as they find themselves on opposite sides of a contentious divorce suit. Meanwhile, Alicia offers assistance to Finn when it becomes clear that the State's Attorney is looking for a scapegoat in the Jeffrey Grant case.

Florrick/Agos takes on the case of an NSA whistleblower, only to learn that the agency has been monitoring the firm as well as Alicia’s personal life. Meanwhile, Diane faces the difficult task of working alongside Louis Canning when he joins Lockhart/Gardner. Also, Alicia goes after the State’s Attorney when he attempts to make Finn a scapegoat in the Jeffrey Grant case.

When Alicia has a chance encounter with a charming entrepreneur during jury duty, she begins to consider options outside her marriage and seeks the advice of her mother. Meanwhile, Diane's friends come to her for legal advice when their son is accused of selling drugs on the Internet.

Alicia manages the fallout when her client's insensitive statements to the press threaten the fate of a multi-billion dollar merger. Meanwhile, Diane faces a potential conflict of interest when she and Louis Canning are on opposite sides of a class action suit involving a pharmaceutical company. Also, Eli learns the truth about Alicia and Peter's relationship.

The futures of Florrick/Agos and Lockhart/Gardner are at stake when the firms consider merging, driving a wedge between Alicia and Cary. Meanwhile, Diane makes a big decision when Louis Canning challenges her role at her firm.

Despite pressure from Eli, Alicia is determined not to run for State's Attorney; Diane considers joining Florrick/Agos; a crisis threatens to tear the firm apart.

Elsbeth and Alicia put their fight on hold when they both have clients facing economic espionage charges; Diane battles her former partners over office space

Alicia takes on a college rape case which pits her against Louis Canning when it moves from a university hearing to civil court. Meanwhile, Eli and Elfman conduct a political focus group as Alicia dives into her campaign for State’s Attorney.

Alicia prepares for a key interview which could impact the outcome of the race for State’s Attorney. Also, Louis Canning pressures Florrick/Agos/Lockhart to agree on a settlement in his wrongful eviction case against the firm.

When Frank Prady decides to go after Governor Florrick as a campaign tactic, Alicia is faced with the decision of whether or not to attack Peter’s record as well. Also, when Florrick/Agos/Lockhart take on the case of a man paralyzed by a malfunctioning gun created on a 3D printer, they call on Kurt McVeigh to testify as an expert witness, which leads to a rift between Diane and her husband.

Alicia’s professional future hangs in the balance as she decides what’s next for her career. Meanwhile, when Alicia gets a suspicious call from a client, she discovers that he’s being held in a secret police facility where people are detained without being officially booked.

As Alicia tries to revive her struggling law career, attorney Lucca Quinn becomes her competition; Peter engages a new strategist for his campaign, changing the dynamic with Eli in the process.

When Alicia agrees to support a client's plea of innocence in a shoplifting case, she clashes with the bond court judge; Diane is coerced into arguing against her own beliefs in a case about assisted suicide.

Peter moves in with Alicia to present a family image while Alicia and Lucca go up against Lockhart, Agos & Lee.

Diane is personally conflicted when she is forced to argue a heated case between pro-choice and pro-life advocates in order to retain an important client, represented by attorney Ethan Carver (Peter Gallagher). Also, Alicia and Lucca are desperate for new business and attempt to poach business from Louis Canning (Michael J. Fox).

Alicia and Lucca join forces with Louis Canning to defend a website accused of racial profiling. Meanwhile, Eli and Ruth worry about the nature of Alicia's relationship with Jason and how it could impact Peter's presidential campaign.

Alicia’s night goes from bad to worse when she throws a party to celebrate Howard and Jackie’s upcoming wedding. Also, Eli asks Jason to investigate Peter in preparation for his trial.

As Peter's trial begins, Alicia works desperately to keep her husband from returning to jail. Also, Diane and Lucca move aggressively to expand the law firm, but face serious opposition from David Lee.