When the renegade Time Lord known as Omega attempts to escape from theanti-matter universe he resides in, it requires the combined efforts of Doctors Jon Pertwee, Patrick Troughton, and William Hartnell to save the day in the show's 10th anniversary saga. **Jon Pertwee, Patrick Troughton, and William Hartnell star. 97 min. Two-disc set.** Standard; Soundtrack: English Dolby Digital mono; Subtitles: English (SDH); audio commentary; featurettes; interviews; bonus footage; TV spots; photo gallery; more.