When one of Lola's former murder cases is overturned on appeal, Mark helms the retrial and struggles to keep the bomber in jail, while Lola fears she may have prosecuted an innocent man.

Amid holiday parties, Lola must defend herself before the Commission on Judicial Performance after a complaint is made against her. Also, Judge Lisa Benner enlists Sara, Emily and Luke in staging a "Wizard of Oz"-themed mock trial for the children of Hall of Justice employees, in which Dorothy is on trial for killing the wicked witch.