A black kryptonite explosion splits Lex in two and his evil side - Alexander - is released. Alexander imprisons Lex in the mansion then gives full vent to his evil side - he threatens to evict Lana from the Talon unless she becomes his mate, jousts with Lionel, and tries to kill Clark and Chloe when they figure out his secret.

Last night, American Idol's Top 8 sang their hearts out, in hopes of winning America over. Find out tonight LIVE who will survive and who will be sent home. The contestant who received the fewest votes will be eliminated from the race for the American Idol title.

Katya Derevko purposefully poisons herself, in order to talk to Sydney, and is temporarily removed from her cell. When Sydney finds out that Nadia has been visiting Katya, she goes to visit Katya, and warns her not to talk to her sister again. But when she arrives there, Katya tells her that someone framed her mother to get her killed. Sydney goes looking for some answers. Meanwhile, helps out another agency to find out more information about his father. In the end, they both find out the same man was behind everything...Arvin Sloane.

Tyra gets upset with Tiffany, when she is sent home and she doesn't represent any sadness, while Rebecca, who is also eliminated, cries her eyes out.

As the snow falls in Queens, Carrie heads out to buy an iPod - but instead of achieving musical nirvana, she finds herself stranded on a cold street and in a moral dilemma. Meanwhile, when a couple invites Doug in from the cold, he manages to quickly use up his welcome when he dispenses very un-welcome relationship advice.

When the body of a young woman is discovered at a laundry facility, the bed sheets she is wrapped in lead Mac and Stella back to an upscale New York hotel that houses diplomats from around the world when the United Nations is in special session. Meanwhile, Danny and Aiden investigate the death of a homeless man found dressed as a human statue. By all accounts, the prank is deemed a misdemeanour, but Danny decides to delve further and his refusal to stop the investigation puts him at odds with Mac.

The Sonora Desert in the South-Western United States covers an area of approximately 120,000 square miles. It is an arid, seemingly barren environment with scorching daytime highs and freezing overnight lows. Riding a dirt bike out into the official middle of nowhere, Les simulates a break-down scenario. He empties out the contents of his pack - half a gallon of water, a snack bar and his multi-tool-7 more days!

The bludgeoned corpse of a promiscuous lawyer is found in her office, and detectives treat her former lovers as suspects until DNA evidence points to a

co-worker.

The girls are now in Miami where Paris and Nicole intern at an advertising agency and their new host family, the Jacobs, have baby orangutans Pumpkin and Peanut. And Paris & Nicole have to create a new ad for Burger King.

After Cartman performs a truly despicable act, the boys decide that everyone should ignore Cartman to teach him a lesson. Cartman soon comes to the conclusion that he's dead, and the only person that seems to be able to see him is Butters.

TONIGHT: Author of "Independent Nation," John P. Avlon! Plus, Ed Helms reports on "Promoting the US."