Season 6 of 'Dexter' is dripping with fresh blood. And by that we mean there are a lot of new additions to the cast. Showtime released a promo that introduces us to all of the new characters.
Colin Hanks and Edward James Olmos join the cast as this season's villains. Olmos plays a twisted religion professor, Professor Gellar, and Hanks plays his student, Travis. Together, they conspire to carry out what they consider to be divinely-justified murders.
Rapper and actor Mos is also joining the cast, playing a character named Brother Sam. Dexter initially starts tracking him as a potential victim, but soon discovers he's rehabilitated himself with religion.
Check out more new character descriptions, and the 'Dexter' promo, after the jump.