The Doctor is all that stands between the emotionless, metal-encased Cybermen and their goal of “deleting” humanity in this two-disc collection of Cyber-centric tales. Includes “Army of Ghosts” and “Doomsday” with David Tennant, “Closing Time” and “Nightmare in Silver” with Matt Smith, and “Dark Water” and “Death in Heaven” with Peter Capaldi. 4 3/4 hrs. total. Widescreen (Enhanced); Soundtrack: English Dolby Digital 5.1; Subtitles: English (SDH); documentary; bonus Peter Davison episode “Earthshock.”