Mamie Gummer will return to “The Good Wife” as attorney Nancy Crozier on the season’s fourth episode “Cleaning House”, to be aired on October 19, 2010. Alicia risks disbarment when Childs’ office suspects her of an ethics violation, which could also ruin Peter’s political campaign. Meanwhile, a third candidate is revealed in the campaign for state’s attorney. Guest stars: Michael Ealy as Derrick Bond; Scott Porter as Blake; Corbin Bleu as Javier Berlin; Nick Wyman as Andre Baylon; Griffin Dunne as Judge Jared Quinn; Edward Herrmann as Lionel Deerfield; Mamie Gummer as Nancy Crozier; Lisa Banes as Georgia McGowen; Jason Fuchs as Paul Dylan; Amy Hohn as Helen Donato; Anika Noni Rose as Wendy Scott-Carr; Elizabeth Reaser as Tammy; Bobby Moreno as Joe The Custodian; Sonequa Martin as Courtney Wells; Roslyn Ruff as Poetess and Charleigh Parker as Bailiff. Find more on “The Good Wife” at their official website.