- Script Editor: Terrance Dicks;
- Writer: Robert Holmes;
- Produced by: Barry Letts;
- Director: Alan Bromly;
- Designer: Keith Cheetham;
- Incidental Music: Dudley Simpson;
- Fight Arrangers: Marc Boyle (2-3) and Terry Walsh (4);
- Brigadier Lethbridge-Stewart: Nicholas Courtney;
- Sarah Jane Smith: Elisabeth Sladen;
| Channel | Episode | Title | Date | Viewers | Position |
| BBC 1 |
356 |
Part One |
Sat 15 Dec 1973 |
1517:10 - 17:35 |
8.7M |
34th |
| BBC 1 |
357 |
Part Two |
Sat 22 Dec 1973 |
2217:10 - 17:35 |
7.0M |
75th |
| BBC 1 |
358 |
Part Three |
Sat 29 Dec 1973 |
2917:10 - 17:35 |
6.6M |
89th |
| BBC 1 |
359 |
Part Four |
Sat 5 Jan 1974 |
517:30 - 17:55 |
10.6M |
22nd |
This programme has not been repeated.
- Peckforton Castle, Tarporley, Cheshire;
- Television Centre Studio 1;
- Television Centre Studio 6;
This programme has not working titles
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