January 13, 1984
1h 40m
EN
Pennant Roberts
The Fifth Doctor, Tegan and Turlough arrive on Sea Base 4, a nuclear warhead station under the sea that has some very nasty neighbours.
Peter Davison
The Doctor
Janet Fielding
Tegan Jovanka
Mark Strickson
Vislor Turlough
Tom Adams
Vorshak
Johnny Byrne
4
Ian McCulloch
Nilson
Ingrid Pitt
Solow
Nigel Humphreys
Bulic
Tara Ward
Preston
Martin Neil
Maddox
Nitza Shaul
Karina
BBC
GB
