When terrorists armed with a nuclear warhead plan to detonate the device somewhere in Southern California, now-President Palmer calls former agent Bauer back into service. As Bauer and the CTU desperately search for the warhead, an elaborate conspiracy that reaches deep inside the White House is revealed. All 24 episodes are included in a seven-disc set. 17 3/4 hrs. total. Widescreen (Enhanced); Soundtracks: English Dolby Digital 5.1, Spanish Dolby Digital Surround; Subtitles: English, Spanish;audio commentary; deleted scenes; featurettes; more. **24 episodes on 7 discs. 17 3/4 hrs.**