Classic Doctor Who

The Doctor tries to recuperate within the Zero Room, leaving Nyssa, Adric and Tegan to face the Master. Then Adric is taken and the TARDIS plunges towards Event One.

The Zero Room is gone, and the Doctor's regeneration is unstable. To help him, Tegan locates the tranquil world of Castrovalva and the TARDIS heads there.

Something is wrong with Castrovalva, but the Portreeve cannot help the Doctor identify the problem. And the Master is taunting Adric, caught in his web of power.

As recursive occlusion threatens to destroy everything and everyone in Castrovalva, the Master's space/time trap is revealed, with Adric at its heart.

The arrival of the TARDIS is observed by three Urbankans via their manopticon devices. Intrigued, they begin dividing the Doctor's friends, and disguising themselves as humans.

As the Doctor meets the representatives of humanity aboard the Urbankan ship, a Grecian philosopher reveals a bizarre secret about Monarch and his methods.

Panicking, Tegan accidentally pilots the TARDIS into space, while Lin Fitu betrays the Doctor and Bigon to Monarch, who demands they be beheaded as punishment.

The Doctor takes a dangerous spacewalk to rescue Tegan, while Nyssa ansd Bigon keep the Urbankans distracted and Adric decides exactly whose side he is on.

While Nyssa rests, Adric and the Doctor discover a military expedition on Deva Loka. Tegan falls asleep in the forest watched by the Kinda, but they cannot stop her dreams.

Sanders meets Panna and Karuna, who leave a lasting impression on him, while the Dukkha does the same on Tegan. When Hindle's breakdown begins, the Doctor and Todd are in danger.

Aris now carries the mark of the Mara and has gained voice, so Panna shows the Doctor and Todd exactly what the past, present and future holds for Deva Loka.

As the Mara finally breaks free of its dream dimension, the Kinda must do everything they can to contain it. Hindle's need to destroy everything and everyone is unstoppable.

The TARDIS lands in 17th century England which is being stalked by a robotic death-like figure from behind a holographic wall. The locals seem to be under a strange mesmeric spell.

A Terileptil is living in Sir John's basement and is planning to wipe out mankind with plague rats. It decides to arrange for the Doctor and Richard Mace to be beheaded.

Nyssa and Adric and pursued by the Android, and they head to the safety of the TARDIS, while a mesmerised Tegan prepares to unleash the rats on the Doctor and Richard Mace.

Heading to London Town, the Doctor discovers more Terileptil criminals in hiding. Forced to find a way to stop them, their soliton gas generator explodes, setting London ablaze.

A murder is committed in Cranleigh Hall. The Cranleighs ask the Doctor to play cricket and then join them for a masked ball, enabling the killer to hide in plain sight.

The Doctor stands accused, despite Lady Cranleigh knowing he is innocent. What is the secret she is protecting that allows her to let an honest man go to jail.

Deadly androids are protecting a bomb buried beneath the Earth.

With her crew slowly vanishing, Briggs assumes the Doctor to be the guilty party.

The Cybermen are released from their silos and are on the march.

The Doctor realises the freighter is now a huge bomb, with one passenger still aboard...

When a Speedbird Concorde disappears back through a crack in time, the Doctor takes another Concorde to follow its trail, unaware that a mysterious conjuror, Kalid, waits for him.

After an encounter with the Plasmatons, Nyssa is possessed by strange aliens while the Doctor, joined by Professor Hayter investigates Kalid's inner sanctum.