Cast
- Tom Baker (The Doctor)
- Lalla Ward (Romana)
- John Leeson (K9)
- Dan Starkey (Field Major Lenk / Sergeant Major Stom)
- Jane Slavin (Captain Nina Albiston / Sycon Computer)
- John Banks (Brennan / Trooper Varn)
Doctor Who - The Fourth Doctor Adventures
6.2. Doctor Who: The Eternal Battle
Written by Cavan Scott Mark Wright
Starring Tom Baker Lalla Ward