The TARDIS materializes inside a fortified undersea military installation on wartime Earth, 2084. The Doctor, Tegan, and Turlough find themselves caught between a deadly internal conspiracy and an impending external threat—a coordinated assault by aquatic Silurians poised to strike from the depths.
Directed by Pennant Roberts. Written by Johnny Byrne. Starring Peter Davison, Janet Fielding, and Mark Strickson.
Directed by Pennant Roberts. Written by Johnny Byrne. Starring Peter Davison, Janet Fielding, and Mark Strickson.