This time, the terror is contagious

It's been three years since CTU Agent Jack Bauer thwarted a terrorist attempt to plunge the United States into war. Now he's back in L.A. after working undercover for six months bringing down drug lord Ramon Salazar. But then the FBI receives a phone call threatening the release of a deadly virus in Los Angeles if Salazar isn't released from prison within six hours. As CTU races to locate the virus, Jack realizes that the only way to prevent additional terrorist demands is to find the source of the virus by breaking Salazar out of prison himself.

Special Features:

• Bonus seventh disc with hours of exclusive extras
• Cast-Crew commentary on selected episodes
• Original extended-version season premiere
• Over 45 deleted scenes