Just as Dexter discovers a possible ally in the pursuit of Lumen's former captors, he and Lumen are forced to step down as Homicide uncovers some key evidence linked to one of their prior victims. Debra, who's been reassigned to the Barrel Girls murders, positively identifies two more suspects in the case.

Jack recommends that Liz start seeing a therapist when she worries that Carol is getting bored with their relationship. In an attempt to take Jack’s advice, Liz begins talking to Kenneth about her problems. Jack also finds himself caught up in one of Tracy’s schemes when Tracy tries to convince him to invest in his son’s theme restaurant in Times Square. Meanwhile, Jenna and Paul celebrate their six month anniversary.

Meet Chuck Bartowski. He's your run of the mill computer whiz working for Buy-More with his equally nerdy friends all while longing for the woman of his dreams.

In the season finale, Dexter's situation grows desperate when he discovers that Lumen's been set up. Despite knowing he's being baited into a trap, Dexter risks everything to make sure he doesn't fall into the same mistake again. In the Barrel Girls case, Debra lets her personal feelings lead her instincts once she concludes that vigilantes are more than just a theory. Quinn finds himself in a troublesome situation, which only Dexter can help him out of.

Jack recommends that Liz start seeing a therapist when she worries that Carol is getting bored with their relationship. In an attempt to take Jack's advice, Liz begins talking to Kenneth about her problems.

Jack recommends that Liz start seeing a therapist when she worries that Carol is getting bored with their relationship. In an attempt to take Jack's advice, Liz begins talking to Kenneth about her problems.

Mad Men is a smart and cinematic drama about the professional lives, social mores and sexual exploits of advertising executives on Madison Avenue circa 1960, when the industry was at its height of glamour, power, and prestige. The setting is the Sterling Cooper agency, which sells everything from cigarettes to political candidates. The protagonist, Don Draper, is a fast-rising creative director whose smooth exterior conceals any number of secrets.

Dexter and Lumen's plans are momentarily thwarted when Dexter's forced to do damage control after he concedes that someone, outside of Miami Metro, has taken an interest in them. Debra's speculation on the missing Barrel Girl suspects begins to take shape. Quinn finds himself more involved in a homicide than he'd like to be.