While Alicia is preparing in a case defending a scientist accused of arson, she is suddenly asked to testify on Peter's behalf. Damages Peter Riegert guest stars as the judge in Peter's case and CBS' The Early Show star Russ Mitchell guests as himself and interviews Peter.

Alicia is on the road to successfully arguing that her teenaged pop star client, Sloan, is innocent of a DUI, until Cary drops a bombshell that could ruin the starlet's career and life. Meanwhile, Peter's campaign hits a snag when the Democratic Committee tells him to drop out of the race.

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

Alicia discovers she must become an expert on English law when a libel case she wins involving a businessman from Britain becomes an international matter after it is retried and transferred to a court in England via satellite.

Office politics come to a head when Will and Diane ask Alicia and Cary to face off against them in a mock trial, only to get more than they bargained for. Eli tries to avoid losing his role in Peter’s campaign to Jordan, as he continues his fight with the Justice Department.

Alicia searches for answers as she tries to make sense of Will’s death in the aftermath of the courthouse shooting. Meanwhile, Diane delivers the somber news to the partners at Lockhart/Gardner who must decide how to move forward.

Alicia argues a complex museum vandalism case that involves photographs taken by a mother of her son, and considers enlisting the help of investigator Jason Crouse (Jeffrey Dean Morgan). Meanwhile, Cary deals with inappropriate conduct towards some younger associates at the firm by partner Harold Lyman (Jerry Adler).