She'll play "a tough, smart gangland lawyer who's a doppelganger of [Julianna Margulies'] Alicia," according to TVLine.
Let's hope Sciorra's Good Wife character fares a little better than her Sopranos character, Gloria Trillo, who hanged herself after Tony called things off. Sciorra also previously worked with Good Wife star Chris Noth on Law & Order: Criminal Intent.
Fun fact? Star Margulies also played one of Tony's ladies on the side in The Sopranos.
The Good Wife's fourth season premieres Sunday, Sept. 30 at 9/8c.