Exclusive: Mamie Gummer Returning to The Good Wife

Before she heads to ABC's mid-season Off the Map, Mamie Gummer will reprise her role as prosecutor Nancy Crozier on The Good Wife, TVGuide.com has learned.

The 27-year-old actress, and daughter of Meryl Streep, will return in the fourth episode of the season.

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After working on opposite sides of a murder case last season, Nancy and Alicia (Julianna Margulies) will team up as co-counsels representing a DJ and security team who are being sued for a fatal stampede at a rave concert.

Gummer will next star in Shonda Rhimes' new series Off the Map, about a medical clinic in South America. The series is scheduled to debut midseason on ABC.

The Good Wife's sophomore season premieres on CBS, Tuesday, Sept. 28 at 10/9c.