By Sandra Gonzalez
Updated September 07, 2011 at 11:25 PM EDT

There are a ton of new faces on the upcoming season of Dexter — which premieres Sunday, Oct. 2 — and if you’ve have trouble keeping track, this new extended behind the scenes promo lays them out quite nicely if you ask me.

Among the newbies? Brother Sam, played by Mos (now sans “Def”) is a victim-turned-unexpected ally of Dexter’s. Professor Gellar (Edward James Olmos) is the creepy mentor of Travis (Colin Hanks), who seemingly has succeeded in passing on Gellar’s warped ways. Jamie Batista (Aimee Garcia) is the new nanny and Angel’s (too-hot-to-be-related-in-real-life) sister. And Mike Anderson (Billy Brown), is a new detective and Chicago native who is described as being intolerant of shenanigans and apparently — based on how he treats Deb in the preview — also vaginas.

Take a look below.