Jon welcomes Nobel Prize-winning scientist Harold Varmus to discuss his new book, “The Art and Politics of Science.”

A murder investigation gets sidetracked when the prime suspect is thrown in jail by the INS.

What Jessi and Kyle find in Cassidy’s safe sends them searching for the truth about Sarah Emerson, but Jessi’s unrelenting method may endanger her life. At home, Declan finally puts his foot down, and Josh already misses Andy.

When Dubaku’s evil plan escalates to his boss, General Juma, the stakes are raised and steadfast President Taylor faces a deepening foreign policy dilemma. Meanwhile, Jack Bauer’s staunch defiance to uncover conspirators inside the governme...

Amy gets help from her friends on what to do about the baby.

Suspecting he has a secret girlfriend, the gang follows Barney when he leaves MacLaren’s.

Matt receives a tip from "Rebel" and heads to Building 26 with Peter to save Daphne and find the files that will expose Nathan's government plot. Claire partners up with an unlikely source to smuggle Alex out of the city. Syl...

Chuck breaks up with Sarah after Ellie’s urging, but jealousy strikes when Sarah must seduce a handsome agent in order to retrieve Fulcrum intelligence. Morgan deals with his mother’s relationship with Big Mike by crashing at Chuck’s apartm...

As Bauer’s by-the-book government adversary Senator Mayer heads to the White House for a meeting, another high-impact terror threat develops stateside. Malevolent mastermind and Starkwood honcho Jonas Hodges provokes the situation while Age...

Donald Trump returns for an eighth season in the boardroom. Joining him are fourteen new celebrity candidates vying for the title of the Celebrity Apprentice, as well as $250,000 for the charity of their choice.

Nicki treads on dangerous ground at home and at work; Glory smuggles a church document to Bill; Joey hopes to add Kathy as a second wife.

Charmaine gets breast augmentation surgery. She asks Tara to recover, but instead, Buck shows up at her bedside. Marshall courts Jason by playing hard to get.

When Peggy and Hank forget to pick up Bobby at the mall he uses their ensuing guilt trip to manipulate his parents.

As the Walkers welcomes in a new life, they must also face the terror of losing one of their own. Meanwhile, Rebecca asks her father for help when she comes across new information that may spell disaster for the company.

Following the second elimination, the nine remaining teams resume the race, now heading for Romania. The teams compete a gymnastic challenge. One team makes a potentially fatal mistake when they misplace the pack containing their money and ...

The Los Angeles Gay & Lesbian Center dance marathon is on; someone is moving to the Big Apple; rumors fly fast around the dance floor that Alice and Tasha may be in couple trouble; The HIT!’s Sunset Blvd makes a shocking revelation to K...