DVDs.
Disc label title.
Scheduled for television broadcast in 1980, but never aired; released as a video in 1992.
Standard version.
"Story no. 109"--Container.
Special features include: animated webcast (Flash format),More than 30 years in the TARDIS (disc 3; documentary), featurettes, photo galleries, interview, Radio times listings (PDF materials), production notes subtitles option.