Sneak Peek! Dexter's Secret is Out in Season 7

At the end of Season 6 of the Showtime series “Dexter,” Deb (Jennifer Carpenter) catches her brother, serial killer Dexter (Michael C. Hall), murdering his latest victim.
 
Here’s a teaser trailer for Season 7… how will she handle the situation?
 

“Dexter” returns Sunday, September 30 at 9:00 PM on Showtime.