Discover
Original Release
03/21/1981
Cast
| Name | Character |
|---|
| Tom Baker | The Doctor / Doctor Who |
| Peter Davison | The Doctor |
| John Fraser | The Monitor |
| Anthony Ainley | The Master |
| Janet Fielding | Tegan / Tegan Jovanka |
| Matthew Waterhouse | Adric |
| Sarah Sutton | Nyssa |
| Christopher Hurst | Security Guard |
| Nicholas Courtney | Brigadier Lethbridge Stewart |
| Valentine Dyall | Black Guardian |
Directors
Writers
Creators
Cast
| Name | Character |
|---|
| Tom Baker | The Doctor / Doctor Who |
| Peter Davison | The Doctor |
| John Fraser | The Monitor |
| Anthony Ainley | The Master |
| Janet Fielding | Tegan / Tegan Jovanka |
| Matthew Waterhouse | Adric |
| Sarah Sutton | Nyssa |
| Christopher Hurst | Security Guard |
| Nicholas Courtney | Brigadier Lethbridge Stewart |
| Valentine Dyall | Black Guardian |
| Adrian Gibbs | The Watcher |
| Keith Guest | Security Guard |
| Louise Jameson | Leela |
| John Leeson | K9 / K9 (voice) |
| Ian Marter | Harry Sullivan |
| Peter Pratt | The Master |
| Bruce Purchase | Pirate Captain |
| Christopher Robbie | Cyberleader |
| Elisabeth Sladen | Sarah Jane Smith |
| Robin Squire | Pharos Project Boffin |
Producers
| Name | Role |
|---|
| Barry Letts | Executive Producer |
| John Nathan-Turner | Producer |
