So, Dexter"s in Narcotics Anonymous, which is fine, but he doesn"t stay at his first meeting through to the end, and ends up not getting a "first day chip." Rita"s not pleased. So not pleased, in fact, that she tells him to stick with it or take a hike. He tries a second time, and tells everyone a bullshit story about himself, "Bob." A fetching lass named Lilah takes him out for coffee afterwards and calls him on his shit, making him feel nervous, because he thinks addicts will be able to see the lies he has inside. He tells Rita that he doesn"t need NA, and can totally recover on his own, and she shoves him out of her place.
Meanwhile, Special Agent Lundy has put together his task force for the BHB, which includes Deb, Masuka, and Angel. He couldn"t have chosen a better time, because Pascal made a PR faux pas, telling the press that people should come down to the station and report missing people. At first, Deb has trouble dealing with all the sad people and their sad stories, and she tells Lundy that she wants off his task force. Lundy insists that Deb stay on, and eventually she makes the connection of a couple of missing people being "bad guys," which Lundy finds interesting.
On the killing front, Dexter"s found a car salesman who runs credit checks on young women to find out more info on them, then hunts them down and rapes and kills them. Dexter does away with the guy, but not before buying a new minivan from him and having a heart-to-heart with the guy about women. When the guy calls Rita a "cunt," Dexter...well, you know. He stabs him in the heart.
NA eventually turns out to be a decidedly convenient lie, as Dexter"s third turn allows him to come clean about his addiction (which I guess isn"t really a lie; I mean, he is addicted to killing people) and use his real name, as well as impress the undeniably tasty Lilah. It also gets Rita to take him back, and it gets Doakes off his back when he tracks Dexter to the meeting.