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.

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.