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. This specially produced documentary includes contributions from Terrance Dicks, Elisabeth Sladen, Anthony Read, Colin Baker, Nicola Bryant, Bob Baker, Eric Saward and Stuart Fell.
| Actor | Role |
|---|---|
 Terrance DicksNot listed | Not listed |
 Elisabeth SladenNot listed | Not listed |
 Anthony ReadNot listed | Not listed |
 Colin BakerNot listed | Not listed |
 Nicola BryantNot listed | Not listed |
 Eric SawardNot listed | Not listed |
| SStuart FellNot listed | Not listed |
 Bob BakerNot listed | Not listed |
| MMick BrosterSquadron Commander Gron | Squadron Commander Gron |
 Robert Holmes(archival footage) | (archival footage) |
 Barry Letts(archival footage) | (archival footage) |
| GGareth Jenkins(archive footage) | (archive footage) |
 Jimmy Savile(archive footage) | (archive footage) |