The fourth season begins with Kalinda's estranged husband forcing his way back into her life. Meanwhile, Alicia fights for Zach's rights when he is targeted by an overzealous state trooper; and Diane and Will try to rescue the firm from financial ruin.
The accountant for drug dealer Lemond Bishop is arrested. Alicia must determine what the Feds want and whether they are targeting his legal businesses or his drug money. Meanwhile, Nick creates more trouble for Kalinda.
Alicia and Cary travel to Washington, D.C., to represent a comedian who is being sued by a TV network for indecency. While there, Cary has an uneasy reunion with his father. Back in Chicago, Diane and Will question Clarke's latest strategy to help the firm get out of debt.
Will believes that a judge is biased against his client and demands a hearing to determine if another judge should take over the case. Meanwhile, Grace deals with the death of a classmate; and Zach searches for a way to help his dad's campaign.
Alicia and Diane agree to let a famous liberal lawyer assist them on a case, but they soon realize that he may not have their client's best interests in mind. Meanwhile, Alicia's mother arrives seeking legal and moral support from her daughter and son.
Will defends a man accused of murder, and Alicia attempts to influence the outcome of the case by assisting a prosecutor in a nearby county who is trying another man for the same crime. Meanwhile, Eli feels pressure from the Justice Department.
Will hopes for a large payday on his latest case, but frequent nemesis Louis Canning tries to delay a deposition that is crucial to Will's argument. Meanwhile, an old foe complicates Eli's life; and Will and Diane take a stand against Clarke.
Office politics surface when Will and Diane face Alicia and Cary in a mock trial. Meanwhile, Eli tries to avoid losing his role in Peter's campaign to Jordan, as he continues to fight the Justice Department.
Elsbeth takes an assistant U.S. attorney to civil court for defamation when the Justice Department refuses to reveal who will be testifying against Eli. Meanwhile, Jordan helps Peter prepare for a debate.
Alicia defends jailed drug dealer Lemond Bishop, but he requires her to work with another lawyer she suspects may be coercing witnesses to recant their testimony against Bishop. Meanwhile, Kalinda is forced to train a new investigator; and Cary makes a risky move.
Alicia and Will are hindered at a coroner's inquest by a strict rule that only allows them to ask three questions per witness. Meanwhile, Cary's father returns and brings new business to the firm; and Eli plots to take down Jordan.
One of Alicia's clients is murdered, and she fears the killer may also be targeting someone close to her. To help the police find the culprit, she agrees to waive attorney-client privilege. Meanwhile, Peter and rival Mike Kresteva vie for an influential endorsement; and Diane receives a stunning offer.
Alicia and Will deliberately go to trial unprepared when they learn that an impending Supreme Court ruling could result in notorious client Colin Sweeney being imprisoned for life. Meanwhile, Diane reunites with Kurt McVeigh, but she is then forced to reevaluate the relationship.
Alicia represents a girl who accuses a classmate of rape, a case that draws interest from the hacker group Anonymous, who, in turn, get the public talking about the trial. Meanwhile, Diane continues to go through the vetting process for a seat on the Illinois Supreme Court; and Kalinda grows suspicious of Robyn.
Alicia takes a case involving software coders in a contract dispute as a favor to her mother, but the case leads to unexpected consequences at the firm. Meanwhile, Peter asks Alicia to renew their vows; and Kalina plays two sides of the firm against each other.
Alicia attends emergency court proceedings with Peter's gubernatorial election on the line as the fourth season ends. The late-night meetings occur because Zach believes he witnessed vote tampering. Meanwhile, an unlikely source offers Cary aid to start his own firm; and Alicia is forced to face her conflicted feelings in her personal and professional lives.