Some of the nation's most provocative secrets are shattered by this History channel series! Viewers will enter Fort Knox, explore the private signs and rituals associated with the mysterious Freemasons, tour Area 51, frolic in the Playboy Mansion, visit the elite West Point school, and more. All 11 episodes of the series are presented in a three-disc set. 7 3/4 hrs. total. Standard; Soundtrack: English Dolby Digital stereo; Subtitles: English, Spanish; featurette. 11 episodes on 3 discs. 7 3/4 hrs.