Begin your journey through time, space, and 50 years of "Doctor Who" with this four-disc set of documentaries and classic episodes highlighting the first four performers to portray the Time Lord. Along with the first four overviews in the "The Doctors Revisited" series, fans can enjoy "The Aztecs" starring William Hartnell; "The Tomb of the Cybermen" with Patrick Troughton; Jon Pertwee in "Spearhead from Space"; and "Pyramids of Mars" from the Tom Baker era. 14 1/2 hrs. total. Standard/Widescreen (Enhanced); Soundtracks: English Dolby Digital stereo, Dolby Digital mono; Subtitles: English (SDH).