The season 6 additions for Showtime’s killer drama Dexter continues. Today rapper/actor Dante “Mos Def” Smith joins the cast for the show’s sixth season.

The multi-episode role will be a typical one for Dexter: Mos Def will play an ex-con who’s had a spiritual conversion, yet continues to find himself in the middle of Miami’s violent criminal underworld. Dexter Morgan will, naturally, expose him. No points for guessing how that one ends.

Mos Def is the second new actor confirmed for Dexter, after Colin Hanks’ casting was announced earlier this week. Few details are available on Hanks’ role – spurring speculation that he may be one of the villains in Season 6.

While many singers and rappers try their hands at acting, Mos Def has fared better than most. He’s taken parts in movies like 16 Blocks, Monster’s Ball and the remake of The Italian Job, as well as a memorable role as Ford Prefect in The Hitchhiker’s Guide to the Galaxy.

He’s also made the rounds on the small screen. After comedic parts on Chapelle’s Show and The Boondocks, he took a role opposite Alan Rickman in the HBO movie Something The Lord Made. His portrayal of Vivian Thomas, a janitor turned medical researcher, earned him a nomination for both an Emmy and a Golden Globe.

Dexter still has plenty of roles left to fill, according to casting information put out by Showtime. Season 6 will shy away from the show’s reliance on a ‘Big Bad’, a formula that’s worked for several seasons – but has fans hoping for a little variety. According to Showtime president David Nevins, the new year will see Dexter “getting back to his roots.

To that end, the network released a teaser video to whet fan appetites. There’s nothing new in the video, but considering that it features the shocking Season 4 finale and promises more, one can’t help but be excited for what comes next. Dexter begins filming later this month.

Dexter returns to Showtime this fall.

Follow Michael on Twitter: @MichaelCrider

Source: The Hollywood Reporter