After Clark receives a message from the recently-deceased Dr. Swann, he and Lana follow Jason and Lex to China in search of one of the kryptonian crystals. Lana is tortured, causing Isabelle to emerge and wreak havoc in her search for the crystal.

Jackie gets stage fright when she has her own show.

The Top 24 finalists performed for the first time this week and now America has decided who will stay and who will go. Tonight, four contestants - two males and two females - will go home, leaving 20 finalists vying for the American Idol crown. See who America chose to stay.

Jack temporarily takes over as director, when Sloane steps down, over their ext mission, which includes Anna Espinosa, Sydney's old enemy. When Anna kidnaps Nadia, she forces Sydney to do what she wants. Sydney tells Nadia about Rambaldi's profecy saying about two sisters fighting but only 1 surviving. Also, Vaughn goes to Sark to helps.

Adam and Jamie go head to head in a madcap Mexican jailbreak as they taste-test the theory of the Salsa Escape. And take one cement truck, add 850 pounds of dynamite, and what's left? Absolutely nothing, apparently. Adam and Jamie join forces with the FBI to find out if you can remove cement build-up from a mixer's barrel using dynamite.

Now that Vice President Russell appears to be the Democratic nomination front-runner, Josh is becoming increasingly annoyed that Santos is drawing less press coverage despite his strong New Hampshire finish. Josh begins to suspect that the White House is secretly backing a candidate when he finds a link between Senator Rafferty's health care plan and Bartlet's original health care plan. Meanwhile, C.J. deals with lobbyists over a Western drought; and Charlie talks with Kate Harper when a man at his gym asks about her.

After months at home to prepare the final moment has come. The final three have their shot to show the world their collections. While the audience watches the models strut their stuff on the runway. Mean while backstage the air is tense and the commotion is frantic as people get ready, change and get ready again. Each of the three finalists show 12 pieces in the show, ending with a walk of the designers themselves. Later back at the Project Runway runway the judging takes place and the winner is announced... .

Wendy Pepper. Is Out!
Kara Saun Is Out!
Jay McCarroll Is the Winner of Project Runway

When delivering a package to his old high school, Doug meets his old football coach, and against Carrie's wishes, begins to return to the school on a regular basis as the football hero.

Mac and Stella investigate when they find the body of Paddy Dolan, a longshoreman. Part of the body is found on a transport truck and another part back at the warehouses, but Mac encounters difficulty with the investigation when the workers put up a wall of silence against them. Aiden and Danny investigate the death of Debbie Bogda, who was found naked on the expressway, and their investigation leads them into a world of sexual games and bondage once they realise she was actually harnessed to the front of a truck.

The investigation into a fatal traffic accident leads Fontana and Green to a slaughtered hunting party in the woods and an unknown man who may have been pursuing vigilante justice.

When the raft the survivors have been building mysteriously burns down, Michael is convinced that Jin is responsible for the sabotage, which only serves to escalate their rivalry. Meanwhile, Sun stuns her fellow survivors with a surprising revelation, and Boone gives Sayid a warning about his step-sister Shannon. Lastly, more details of Jin and Sun's troubled marriage are revealed through flashbacks.

Paris and Nicole go and work with a plastic surgeon. Obviously, chaos reigns more ways than one. Also, Meanwhile, the girls hit it off with their new host family and leave quite a lasting impression on the mom.

TONIGHT: Host of "Peter Jennings Reporting: UFOs - Seeing Is Believing", Peter Jennings!