Deb walking in on her brother during his serial-killing ritual.
Look for the new season to tackle this topic straight on, with the latest Dexter trailer featuring the show's title character narrating: “Everything in my life has brought me to this point. It’s what I am, it’s all I am. I can accept that... but can she?”
Well... can she?!? Near the end of this promo, we hear what we can only imagine to be Deb's words from the upcoming premiere: Get away from the body!