Special Features
Audio commentary by actress Elisabeth Sladen, co-writer Bob Baker and producer Philip Hinchcliffe.; Built for War - A specially produced 39-minute documentary on the genesis and development of the Sontaran race through the history of the series, as told by some of the actors and production team involved, Includes contributions from Terrance Dicks, Elisabeth Sladen, Anthony Read, Colin Baker, Nicola Bryant, Bob Baker, Eric Saward and Stuart Fell; Production notes subtitle option; Photo gallery; Digitally remastered picture and sound quality