Connie Nielsen has been retained by The Good Wife.

According to TV Line, the veteran actress - who played a serial killer on The Following Season 2 - will come on board this CBS drama as Ramona, an intelligent attorney with far-reaching Cook County connections.

Might she have a lot to do with Alicia's possible State’s Attorney run?

Nielsen will debut on Episode 4 this fall, joining such other major Good Wife guest stars as Taye Diggs, who will also be playing a lawyer.

The Good Wife Season 6 kicks off on Sunday, September 21 at 9/8c.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.