Gary Levin

USA TODAY

CBS said Wednesday it has plans for a spinoff of acclaimed drama The Good Wife, which wrapped up a seven-season run earlier this month.

The new, as-yet-untitled series, will star Christine Baranski and Cush Jumbo, and is to be offered exclusively online via CBS's All-Access streaming app, which costs about $6 a month. The network is expected to produce 10 to 13 episodes of the spinoff, which will join Star Trek: Discovery, a new series in the sci-fi franchise, as an All-Access exclusive next year.

The series, another legal drama, will focus on the firm headed by Baranski's Diane Lockhart, with Jumbo (who joined Wife in its final season) returning as Lucca Quinn. But it will be told through the eyes of Diane's young goddaughter and legal colleague, the offspring of her wealthy college roommate, whose family isn't as picture-perfect as it seems.

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Good Wife creators Robert and Michelle King are creating the new series, but will be less involved in day-to-day writing and production. (They are currently working on BrainDead, a summer CBS drama).

Good Wife, a five-time Emmy winner (including two for star Julianna Margulies), wrapped up its run May 8 after the husband-and-wife Kings decided to step away from the series and CBS chose to cancel it rather than continue with new writers. Never a ratings hit, it was the network's prestige critical success, and in recent years a rare broadcast-drama contender for top Emmy awards. Baranski is a six-time nominee for her role, and also has made several guest appearances on the network's top comedy, The Big Bang Theory, including last week's finale.

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At a time when network streaming apps are multiplying, CBS is trying to give viewers more reasons to subscribe by offering exclusive content. The new Star Trek series will air its premiere episode on CBS but subsequent episodes will be shown only online.