When cyber-terrorists target the U.S. infrastructure over the July 4th weekend, the government asks Det. John McClane (Bruce Willis) to bring a skilled hacker (Justin Long) in for questioning. Sensing a threat to their plans, the bad guys kidnap McClane's daughter (Mary Elizabeth Winstead) for leverage, leading McClane to deliver his fourth "Yippee-ki-yay" with extreme, action-packed prejudice. Timothy Olyphant, Maggie Q co-star. 130 min. Widescreen (Enhanced); Soundtracks: English DTS HD 5.1,Dolby Digital 5.1, French Dolby Digital 5.1, Spanish Dolby Digital 5.1; Subtitles: English, Spanish; audio commentary; behind-the-scenes footage; featurettes; game; theatrical trailers.