The first soap opera to premiere in more that 25 years will feature a primarily Black cast, a historic breakthrough for a genre that is a throwback to an earlier time.

Tunie, whom fans will recognize from her years on “Law & Order: SVU,” has returned to her soap opera roots in CBS’s “Beyond the Gates,” the first daytime serial centered on a Black family in the history of U.S. broadcast television. Premiering Monday, it chronicles the dramas of the Dupree family, the de facto rulers of a tony gated community.