Jussie Smollett from Empire will be the special guest star in WGN America’s critically acclaimed hit series Underground tonight [March, 30] at 10pm (ET/PT).

Visit streaming.thesource.com for more information

This will also mark the first time in 20 years he’ll be appearing on the same show as his younger sister Jurnee Smollett-Bell (who stars as Rosalee). In tonight’s “Firefly” episode, Smollett will portray a wild-eyed runaway slave named Josey.

Underground was the number one trending topic on Twitter last Wednesday during its airing and viewers can catch up on recent popular episodes in tonight’s marathon, beginning at 8pm. For more information on the story’s plot and Smollett’s character, view the preview clip below.