A look at an extraordinary era of musical experimentation within Doctor Who, with special emphasis on the musical scores for Doctor Who and the Silurians and The Sea Devils. Featuring producer Barry Letts, composer Mark Ayres and directors Timothy Combe, Christopher Barry and Michael Briant, with an archive appearance from Radiophonic composer Malcolm Clarke.
| Actor | Role |
|---|---|
 Mark AyresNot listed | Not listed |
 Barry LettsNot listed | Not listed |
 Timothy CombeNot listed | Not listed |
 Michael E. BriantNot listed | Not listed |
 Malcolm Clarke(archive footage) | (archive footage) |
 Christopher BarryNot listed | Not listed |