>The previous season of Dexter had fans wondering if Showtime’s hit about a morally correct murderer and his “dark passenger”—blood lust—had succumbed to serial monotony. But then Dexter (Michael C. Hall) was caught in the act by his sister, police lieutenant Deborah (Jennifer Carpenter). That game change sets season 7 (premiering Sept. 30) on an exciting new course. Can Dex control his addiction without bringing in Dr. Phil as a guest star? Will Deb arrest Dex? The predicament is ridiculous, but by episode 4 intentions are nicely tangled, and Mr. Passenger is rubbing his hands in anticipation.