Warriors of the Deep: Part 4—Season 21

War is avoided but lives are lost; the Doctor reflects there should have been another way.

Warriors of the Deep: Part 3—Season 21

Vorshak's crew are cut down one by one by Sauvix's Sea Devil Warriors.

The Silurians and Sea Devils send in the Myrka to spearhead their invasion.

Seabase 4 is on alert as a strange craft approaches.

Who is taking the Doctor out of time and placing him in the Death Zone on Gallifrey?

The Master and the Doctor fight for control of Kamelion's mind.

When the TARDIS appears, King John is more curious than alarmed, as is Sir Gilles Estram.

Turlough must make a decision and it's one the Doctor and Tegan cannot help with.

During an Eternals party Captain Wrack places a bomb aboard Striker's ship.

The Doctor realises that Striker is an Eternal and that the crew mean nothing to him.