| “Episode Four”, Opening Titles | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:35 | |
| “Episode Four”, Scene 1: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:53 | |
| “Episode Four”, Scene 4: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:29 | |
| “Episode Four”, Scene 5-5a: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:23 | |
| “Episode Four”, Scene 6: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:32 | |
| “Episode Four”, Scene 7: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:22 | |
| “Episode Four”, Scene 8: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:56 | |
| “Episode Four”, Scene 9: Interior Pipe Room (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:09 | |
| “Episode Four”, Scene 10: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:11 | |
| “Episode Four”, Scene 11: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:07 | |
| “Episode Four”, Scene 12: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:41 | |
| “Episode Four”, Scene 13: Colony Hall and Cupboard | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 2:30 | |
| “Episode Four”, Scene 17: Interior Hall, Night | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 2:44 | |
| “Episode Four”, Scene 18: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:41 | |
| “Episode Four”, Scene 22: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:35 | |
| “Episode Four”, Scene 23: Interior Pipe Room (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:53 | |
| “Episode Four”, Scene 29: Deserted Colony Hall (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:06 | |
| “Episode Four”, Scene 37: Interior Colony Hall (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 2:04 | |
| “Episode Four”, Scenes 2-3: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:10 | |
| “Episode Four”, Scenes 3-36: Alternating Interior Pithead and Pipe Room (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:03 | |
| “Episode Four”, Scenes 14-16: Interior Pipe Room and View of Control Room (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:54 | |
| “Episode Four”, Scenes 19-21: Interior Pipe Room and View of Control Room (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:22 | |
| “Episode Four”, Scenes 24-28: Alternating Interior Pithead and Pipe Room (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:36 | |
| “Episode One”, Opening Titles | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:27 | |
| “Episode One”, Scene 1: Exterior Colony Entrance (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:30 | |
| “Episode One”, Scene 2: Exterior Quarry (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 3:40 | |
| “Episode One”, Scene 3: Exterior Colony Entrance (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:55 | |
| “Episode One”, Scene 4: Interior Refreshing Department | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:42 | |
| “Episode One”, Scene 5: Interior Refreshing Department (continued) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:54 | |
| “Episode One”, Scene 6: Exterior Colony (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:22 | |
| “Episode One”, Scene 7: Interior Refreshing Department | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:51 | |
| “Episode One”, Scene 8: Interior Cell (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:42 | |
| “Episode One”, Scene 9: Interior Refreshing Department | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:08 | |
| “Episode One”, Scene 10: Interior Cell (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:08 | |
| “Episode One”, Scene 11: Exterior Building Under Construction (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:21 | |
| “Episode One”, Scene 12: Interior Labour Centre (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:43 | |
| “Episode One”, Scene 13: Interior Building Under Construction (Day) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:15 | |
| “Episode One”, Scene 14: Interior Refreshing Department | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:54 | |
| “Episode One”, Scene 15: Interior Doctor's Cubicle (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:30 | |
| “Episode One”, Scene 16: Interior Refreshing Department (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:30 | |
| “Episode One”, Scene 17: Exterior Colony Entrance (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:55 | |
| “Episode One”, Scenes 18-19: Interior and Exterior Building Under Construction (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:34 | |
| “Episode One”, Scenes 20-23: Interior and Exterior Building Under Construction (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:39 | |
| “Episode One”, Scenes 24-27: Interior and Exterior Building (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:19 | |
| “Episode Three”, Opening Titles | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:31 | |
| “Episode Three”, Scene 1: Interior Pilot's Headquarters (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:04 | |
| “Episode Three”, Scene 2: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 3:40 | |
| “Episode Three”, Scene 3: Interior New Underground Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:46 | |
| “Episode Three”, Scene 4: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 2:39 | |
| “Episode Three”, Scene 5: Interior New Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:52 | |
| “Episode Three”, Scene 6: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:19 | |
| “Episode Three”, Scene 7: Interior New Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:22 | |
| “Episode Three”, Scene 8: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:36 | |
| “Episode Three”, Scene 9: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:43 | |
| “Episode Three”, Scene 10: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:19 | |
| “Episode Three”, Scene 11: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:51 | |
| “Episode Three”, Scene 12: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:57 | |
| “Episode Three”, Scene 13: Interior Pilot's Headquarters (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:33 | |
| “Episode Three”, Scene 14: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:26 | |
| “Episode Three”, Scene 15: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:17 | |
| “Episode Three”, Scene 16: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:10 | |
| “Episode Three”, Scene 17: Interior Pilot's Headquarters (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:31 | |
| “Episode Three”, Scene 18: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:38 | |
| “Episode Three”, Scene 19: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:12 | |
| “Episode Three”, Scene 20: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:23 | |
| “Episode Three”, Scene 21: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:19 | |
| “Episode Three”, Scene 22: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:49 | |
| “Episode Three”, Scene 23: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:20 | |
| “Episode Three”, Scene 24: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:18 | |
| “Episode Three”, Scene 25: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:18 | |
| “Episode Three”, Scene 26: Pithead (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:07 | |
| “Episode Three”, Scene 27: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:25 | |
| “Episode Two”, Opening Titles | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:26 | |
| “Episode Two”, Scene 1: Exterior Building Under Construction (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:19 | |
| “Episode Two”, Scene 2: Interior Pilot's Headquarters (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 4:58 | |
| “Episode Two”, Scene 3: Rest Cubicles in Refreshing Department (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 4:43 | |
| “Episode Two”, Scene 4: Interior Ben/Jamie's Cubicle (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 2:43 | |
| “Episode Two”, Scene 5: Interior Hospital (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:41 | |
| “Episode Two”, Scene 6: Interior Rest Cubicles (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:16 | |
| “Episode Two”, Scene 12: Exterior Building (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 2:44 | |
| “Episode Two”, Scene 13: Interior Pilot's Headquarters (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 3:58 | |
| “Episode Two”, Scenes 7-11: Exterior and Interior Building Under Construction (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 1:06 | |
| Episode Four, Reprise: Interior Old Shaft (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:38 | |
| Episode Two, Reprise: Exterior Building Under Construction (Night) | Ian Stuart Black starring Patrick Troughton, Michael Craze, Anneke Wills, Frazer Hines narrated by Colin Baker | | | 0:20 | |
