Starring Colin Baker as the sixth Doctor. This classic two-part story is packed with a host of extras.

Whilst narrowly avoiding a collision with Halley's Comet in the TARDIS, the Doctor and Peri encounter a distress call emanating from London, Earth in 1985. The Doctor decides to investigate…

In central London, a gang of diamond thieves, led by ex-Dalek agent Lytton, plan to enter their target building via the sewers. But once down in the darkness, things start going wrong, for lurking in the underground shadows are the Cybermen…

When the Doctor and his companion Peri are captured by the Cybermen, they are caught up in a complex scheme to dramatically alter history as the Cybermen try to prevent the destruction of their original home world, Mondas.

Special Features:

• Commentary – with actors Colin Baker, Nicola Bryant, Terry Molloy and Sarah Berger.
• The Cold War – cast and crew look back at the making of the story. With actors Colin Baker, Nicola Bryant, Terry Molloy and Sarah Berger, writer Eric Saward, director Matthew Robinson, continuity advisor Ian Levine and film cameraman Godfrey Johnson. Narrated by Stephen Greif.
• The Cyber Story – a brief history of the Cybermen in the classic series. With director Morris Barry, writer Eric Saward, costume designers Sandra Reid and Dinah Collins, Cyberman actor Mark Hardy, voice artiste Roy Skelton and Professor Kevin ‘Human Cyborg’ Warwick.
• Human Cyborg – an interview with Professor Kevin Warwick, who has used himself as a human guinea pig for cybernetic implant experimentation. 16:9FHA
• The Cyber-Generations – a gallery of Cyberman through the history of the series.
• Also includes a Photo Gallery, Trails and Continuity, Isolated Score, Easter Egg, PDF Material, Programme Subtitles and Subtitle Production Notes.