While Peter gets acclimated to life at home and works on a comeback strategy with his political team, including Eli Gold, Alicia and Diane wrestle with spousal privilege laws in a murder case that hinges on their ability to get a wife to testify against her husband.

Alicia and Will defend a college student accused of killing her sorority sister while under the influence of a sleep aid. At the same time, they also deal with their growing sexual tension and Diane and Kurt McVeigh continue their flirtation.

At Eli Gold's urging, Alicia must decide if she'll stand by her man during Peter's new political campaign, or if she'll pursue a relationship with Will instead.

Diane represents ballistics expert Kurt McVeigh in a lawsuit; Eli takes an interest in Wendy Scott-Carr's illegal nanny.

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.

Alicia and Will go to trial unprepared when they learn that an impending Supreme Court ruling could result in Colin Sweeney being jailed for life. Also, Diane reunites with Kurt McVeigh but is forced to reevaluate the relationship.

Alicia tries to obtain Lockhart/Gardner files as she prepares to exit the firm; faced with a sexual harassment lawsuit, the firm hires Elsbeth Tascioni.

Alicia and Cary represent a client who changed firms and Will and Diane delay turning over the case files; Marilyn tries to give advice to Alicia.

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 political future is on the line when Peter gives an interview that could influence voter turnout on Election Day. Meanwhile, a weekend getaway with Kurt and his affluent hunting buddies could lead Diane to a prosperous new client for the firm.

Alicia and Lucca travel to Toronto to represent NSA agent Jeff Delinger (Zach Woods) who was detained by customs officers while attempting to re-enter the United States. Also, Diane grows concerned when her husband, Kurt McVeigh (Gary Cole), decides to retire and sell his business to Holly Westfall (Megan Hilty), a rival business owner. Peter contemplates an uncertain future when faced with a possible arrest.

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.

Peter has little time left to make a plea deal before the jury comes back with a verdict. Meanwhile, Alicia must decide whether her future is with Peter or with Jason, and she channels the ghost of Will Gardner to help make a decision.