26 episodes were originally broadcast in 1979
The massive Kroll is awake and killing anyone in its path. And the swampies are determined to appease it.
The Doctor and Romana are trapped between the monstrous Kroll and the insane refinery commander.
The Doctor and Romana land in the midst of a brutal nuclear war between the planets Atrios and Zeos.
Swept up in an apocalyptic war, the Doctor must help the Marshall defend his planet.
The Doctor meets a new enemy, the Shadow, who wants the Key to Time.
There is a desperate gambit to prevent a massacre...while it is getting harder to tell friend from foe.
The Shadow appears to hold all the cards, but the Doctor has found an old friend.
The Doctor and the Shadow have their final confrontation to take control of the Key to Time.
The TARDIS lands on the old Dalek homeworld of Skaro, with the newly regenerated Romana.
Romana is captured and interrogated by the Daleks whilst the Doctor meets the Movellans.
Davros has awoken from his centuries long slumber and is taken prisoner by the Doctor.
The Doctor discovers that the Daleks need Davros to break the stalemate in their war with the Movellans.
While on holiday in Paris, the Doctor and Romana experience a time distortion.
The Doctor and Romana become the reluctant guests of Scarlioni who is planning to steal the Mona Lisa.
Count Scarlioni is revealed to really be Scaroth, and is funding the construction of a time machine.
Scaroth intends to travel back in time to save his own people from destruction.
The planet Chloris. Drawn here by a mysterious distress signal, the Doctor becomes the prisoner of the ruthless Adrasta.
The Doctor is in a pit with a deadly creature. And Adrasta has plans for Romana and K-9.
The Doctor has come face to face with a massive green creature. Adrasta goes into the mines to kill the monster.
The truth about the creature is revealed. But its imprisonment may have already set in motion a terrible revenge.
The starships Empress and Hecate are fused together after an accident in hyperspace.
Monsters and drug smugglers are loose on the ship. And it all seems to tie in with Tryst's electronic zoo…
The Doctor and Romana begin to uncover the truth about the strange events aboard the luxury liner Empress.
The Doctor finally discovers the truth about the drug smuggling ring. But the villains are still one step ahead.
With the TARDIS disabled in order to undergo repairs, the Doctor is powerless when Romana is kidnapped.
On Skonnos, Romana and the Athenian youngsters are forced into the labyrinth of the power complex.