After the State's Attorney refuses to pursue criminal charges, Alicia becomes second chair on a civil suit involving the rape of a prostitute at a bachelor party who may have been hired and abused by her own husband.

Alicia learns more about Peter's fall from office when she represents Glenn Child's wife, Carla Browning, in her divorce appeal. Meanwhile, Will and Emily, an opposing counsel, get cozy during a death suit against Duke Roscoe, a caustic TV commentator.

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.

Lockhart & Gardner leads a class action suit against a software company that allowed the Syrian government to “disappear” American citizens. Also, Will faces a hard decision in the wake of the Grand Jury proceedings.

When a female military officer accuses a civilian contractor of attempting to rape her in Afghanistan, Alicia tries to prove that he is not protected by a law prohibiting servicemen from suing the military. Meanwhile, a surprising new obstacle appears in Peter's quest for the governorship.

When Zach thinks he has witnessed vote tampering, Will, Alicia and Diane race to a series of emergency court proceedings on the night of the gubernatorial election; an unexpected source offers to help Cary start his own 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.

Diane, Cary, and Lucca defend the grieving father of a shooting victim (Blair Underwood) in a defamation suit over a billboard he put up describing a gun store owner as a murderer. Also, a romantic rendezvous between Alicia and Jason is interrupted when Alicia learns that Grace is being accused of plagiarizing her college entrance essay.