Battlestar Galactica‘s Edward James Olmos will be making Miami his new port of call. The veteran actor has signed on for a major arc in Dexter‘s sixth season.

Sources say that Olmos will be playing an enlightened religious studies professor. It’s unknown how the character will fit into the plot, but one would assume that Olmos’ character will somehow play a part in Mos Def’s storyline of an ex-con who’s had a spiritual conversion.

Olmos will be most recognizable to television fans as Admiral William Adama in Syfy’s celebrated Battlestar Galactica reboot. The actor has a long history in Hollywood, appearing in Blade Runner, Stand And Deliver and all five seasons of Miami Vice. He played a brief but memorable role as a newspaper editor in The Green Hornet earlier this year.

Olmos joins other notable actors such as Colin Hanks (as well as aforementioned Mos Def) in Dexter‘s latest season. It would appear than none of the three new roles revealed in the casting calls have been announced, meaning there are still plenty of actors and actresses yet to be discovered.

While Olmos isn’t quite an A-lister, he’s easily the highest-profile actor yet announced for the new season. His professor character will be part of a major arc – with shooting scheduled to begin very soon (if it hasn’t started already) we can expect casting and plot details to begin emerging even faster.

Showtime President David Nevins has hinted that Season 6 would bring Dexter back to his roots and be more like earlier seasons. While he failed to reveal any plot details (the guy’s a professional, more’s the pity) we can assume that the cat-and-mouse game between Dexter and Miami Homicide will be a returning theme, and that Dexter will continue to struggle with his humanity — or lack thereof.

With last season’s high-profile guest Julia Stiles and her character Lumen unlikely to return for any significant arc, there would seem to be a gap open for a character that drives the emotions of Dexter and the audience forward. Although, it’s possible that Sister Deb (Jennifer Carpenter) will continue to press into the niche of Dexter’s psyche – but will she press too hard?

Dexter returns to Showtime this fall.

Follow Michael on Twitter: @MichaelCrider

Source: TV Line