Dexter Morgan (Michael C. Hall) must make a critical decision in this week's penultimate episode of Dexter: Start a new life, or go after the vicious Oliver Saxon (Darri Ingolfsson)? With just two days left in Miami before he is set to leave, Dexter wants to avenge the death of Dr. Vogel (Charlotte Rampling) before starting fresh, although, as we see in this video, Miami Metro gets to him first. Will Dexter have his final revenge? Will his secret be kept? Tune in Sunday, September 15 at 9 PM ET to find out with the Showtime series' second-to-last episode, "Monkey In a Box".