There's no question, this is apparently the final season for Dexter.  You can kind of tell because the clip says "The Final Season".  I'm going to be sad to see this one go, but all good things come to an end (and in Dexter's world they are then chopped into pieces and thrown into the ocean).  Up next is a clip from the very beginning of the first episode of the new season.

YouTube

When we last Dexter and Deb, Deb had just shot her boss and spared her serial killer brother. As you'll be able to tell from this clip, it's wearing on Deb a bit.  In fact, she's pretty much falling apart.  Other than that, we know that some more hit men will be sent after Dexter and that Dexters serial killer girlfriend Hannah (the mind-numbingly beautiful Yvonne Stahovski) will somehow play into the action.