Lucy Lane, Lois' younger sister, comes to Smallville but Clark catches her stealing money from the Talon to pay off a European crime syndicate. Lex offers to help but everything is not what it seems. Meanwhile, a thief breaks into Lana's apartment and steals the crystal, and Jason suspects Lionel.

Eric tries to go on a road trip to be a film maker and ends up right outside the town line with a flat tire. There he finds Leo.

The Top 20 finalists have performed in hopes of winning America's votes. Now America has decided who will continue in the competition and who will not. Tonight, four contestants - two males and two females - will go home, leaving 16 finalists vying for the American Idol crown. The voting results are revealed.

Host Alton Brown ponders the leek, the lesser-known member of the Allium family which it turns, can do anything its siblings can do, only better. Don't believe it? Try these onion rings.

Sark is taken to APO to help them retrieve a bomb from Cadmus Revolutionary Front, but he says that the only way he wll help is if he is allowed to see Laurens body, which Vaughn unwillingly accepts. Nadia is the only one able to with the knowledge to retrieve the bomb, but unfortuately she is still in a coma. Jack is forced to bring her out of her coma, which may not be safe.

Can a person receive third-degree burns if he or she lights a cigarette while inside a port-a-potty? Armed with Adam's "special sample," the build team explores whether human waste can create enough methane to produce an explosive result. Then the MythBusters test whether a broken drive shaft on the front joint of a car vault can cause a car to pole vault after it hits a pothole. Just how high can this car fly?

When the Speaker of the House won't schedule the President's stem cell bill, Santos hatches a plan to pass the bill. Bartlet reluctantly meets with the economist that he split his Nobel prize with, but the meeting doesn't go well since the two are political rivals. Meanwhile, Toby takes interest in a group of middle school children who come to the White House to talk to the staff about voting age; and Kate deals with a Canadian border crisis.

The Final 14 are:
Rebecca
Christina
Keenyah
Brita
Naima
Noelle
Michelle
Sarah
Brandy
Brittany
Kahlen
Tatiana
Lluvy
Tiffany

Carrie is discouraged about her looks as she faces her 35th birthday so Doug gets construction workers to hoot and holler at her as she passes by in hopes of cheering her up. Also, Arthur tries to come up with a perfect gift for his daughter.

When young gang members murder the owner of an upscale Bronx wine store, the CSI's must work to find evidence that ultimately ties someone to the crime. Before dying, the storeowner makes a statement to the police identifying his attackers as young gang members. Tempers flare when the murder investigation reunites Detective Flack with his long-time mentor and friend Sergeant Gavin Moran, who was the first to arrive at the crime scene. Meanwhile, Danny and Aiden investigate the death of an influential movie producer found dead on the canopy of his Chelsea apartment building.

When a TV network executive is found murdered, Detectives Fontana and Green suspect a pair of twins who were stealing from the organization until they discover a celebrity chef with whom the married victim shared an affair. The nimble and charming chef is adroit at cultivating relationships with judges and juries alike, but prosecutor McCoy intends to reveal that the suspect's cooking show was about to be cancelled by his late lover.

When Hurley becomes obsessed with the French woman and heads into the jungle to find her, Jack, Sayid and Charlie have no choice but to follow. Hurley flashes back to the hugely life-altering experience he had before boarding the plane.

Paris and Nicole work as weather-woman on Fox 45 Baltimore News.

TONIGHT: Star of "Be Cool", The Rock! The Rock discusses transitioning from the art of beating people up to film.