STORY
The Fifth Doctor, Tegan and Turlough arrive on Sea Base 4, a nuclear warhead station under the sea that has some very nasty neighbours.
CAST & CREW
- Peter Davison
- Janet Fielding
- Mark Strickson
- Tom Adams
- Ian McCulloch
Cast
- Pennant Roberts
Director
INFORMATION
- BBC
Production Companies
- United Kingdom
Production Countries
LANGUAGES
- English
