Alicia (from "Obsession") is supposedly cured and returns to Smallville to start things back up with Clark. When she pushes for more and he turns reluctant, Alicia exposes him to red kryptonite, and the two go off to Las Vegas to get married. Meanwhile, Lana questions whether sex may prove the key to winning Jason back.

Continuing with the auditions for season 4 from Las Vegas, Nevada.

Sydney and Vaughn go undercover as a married couple to find a weapon, but soon realize that the town which they are in, is not what it seemed.

Presidential rivals Santos and Vinick meet by chance at an Iowa motel restaurant after a day of campaigning. Earlier in the day, the two candidates, as well as Vice President Russell spoke at the Iowa Corn Growers' Expo, each having to take a stance on ethanol subsidies. By the end of the day, Santos and Vinick come to realize that they both have worthy opponents.

At the beginning of the episode model Morgan is out!Heidi announces the next challenge: as one group, the designers will create a collection, one carrying the theme "the year 2055". One designer is to lead, taking responsibility for the overall vision, while each will designer will sketch and create an outfit of his or her own for the line. The designers are to build their collection only using items from at a vintage store. By lottery, Kevin will lead the team. The team decides that deconstruction will be the technique used to make their vintage elements seem more contemporary. A palette of tan, khaki, peach and brown will provide chromatic consistency. You're either in, or you're out, who was out this week? Kevin is Out!

Doug decides to pursue a long-abandoned dream to become a bartender, much to Carrie's angst. Although she starts to warm up the the idea, Doug soon realizes that dreams are not always what they are cracked up to be. Meanwhile Arthur enters the dangerous world of politics.

Mac and Stella investigate the death of Paul Montenassi, a young man left to bleed to death in the snow. The investigation leads them to another victim, Mihok Lev, who had been killed by Montenassi in a robbery earlier that evening. When Hawkes concludes his autopsy on Montenassi, he is able to reveal a sanded-off tattoo that leads the detectives to the Tanglewood Boys. Danny and Aiden investigate the hit-and-run that caused the death of Marta Santo. After discovering sperm on the woman's clothing, Danny and Aiden learn that Santo liked things rough, and their investigation leads them to an erotic massage parlor.

Paris and Nicole leave New York aboard a bus headed for New Jersey, where they work as mechanics in an auto body shop.

When Paris and Nicole stop in Manhattan to intern in the mailroom of a marketing company, they learn that climbing the corporate ladder is hard, especially in designer shoes.

TONIGHT: Actor John Leguizamo! John Leguizamo talks about Sundance, skiing, and being named a sexy hombre.