Enlightenment

The Eternals, bored of their existence, have challenged each other to a space race in ships crewed by ephemerals. But one of the Eternals is working for the Black Guardian…

Terminus

Still under the malign influence of the Black Guardian, Turlough sabotages the TARDIS, placing the Doctor and his companions in grave danger. Nyssa disappears through an unstable interface with a nearby space liner, and the Doctor begins a desperate search for her aboard the ship.

When the liner docks at Terminus, a space station at the exact centre of the universe, the horrific truth starts to emerge. It may already be too late to save Nyssa’s life, and the existence of the entire cosmos is now at peril…

Mawdryn Undead

A warp ellipse draws the TARDIS off course. The Doctor’s companions are separated from him in space, but not time, and he has to deal with a treacherous schoolboy named Turlough. But why does the Doctor’s old friend, the Brigadier, not remember him at all?