Clark discovers that Lana is missing and Tess Mercer may be responsible. Tess informs Clark of startling news concerning an old friend, then discovers startling news of her own at a secret LuthorCorp facility.

The auditions conclude on American Idol as the judges continue their quest to find the next singing superstar from East Rutherford, NJ, & San Juan, PR.

The search for the murderer's of an FBI agent; only to find that he isn't really an FBI agent, and neither are his impressively capable partners.

Fast times at Truman High. Murder brings Sam and Dean back to one of their old high schools, where they investigate possible demonic possession and take a few trips down memory lane.

Season five begins with Chef Ramsey ordering each contestant to cook up their best dish. But all does not go well. The show has the most ever chefs this season with 16, and is unwieldy, which makes one member of each team responsible for busing tables. And for one, it is a disaster. The kitchen proves to be worse. The winner gets a executive-chef position with an Atlantic City, hotel.

Archer causes problems between Addison and Naomi, after he moves to LA to work at Pacific Wellcare. Meanwhile, Cooper tries to help Voilet talk to both Pete and Sheldon about her pregnancy.

Sam calls in a favor and asks Michael to talk to Sean Martin, a football coach who helps impoverished kids. Sean wants Michael's assistance helping one of his players, Corey Jensen, who's being targeted by gangsters.

Hood investigates a millionaire with two fully developed hearts who has congenital heart disease.

Ellis and Charles take on a Romanian human trafficking ring. Charles goes undercover to take down the gang, while Ellis helps a Nadia, a prostitute who's son was sold on the black market by the trafficking ring.

A shipwreck is found that could change history.

Author of "Wired for War", P.W. Singer

Tonight Stephen welcomes former White House Chief of Staff and author of The Power of Progress: How America's Progressives Can (Once Again) Save Our Economy, Our Climate, and Our Country, John Podesta.

This episode is all about fakes and forgeries, with topics ranging from freak shows to false memories.

Lee is shocked when Lucy announces that she is pregnant and he wonders if he could accidentally be the baby's father.