I'll spare you my opinions about Dexter's most recent season and focus on my optimism for Season 6 -- most of which is derived from the first four years of the show. A new image for Season 6 showcases Dexter collaborating with... no, studying... growing suspicious of?... plotting to kill—yeah, that's probably it—guest star Mos Def, whose acting resume is actually way cooler than I realized (The Italian Job, Be Kind Rewind, The Boondocks). We've got high hopes, people. Let's not forget what this show is capable of.