Classic Doctor Who

On a mission to assemble the Key to Time, the Doctor and Romana travel to Ribos.

On Ribos, a lump of jethrik is really the first segment of the Key to Time.

The Doctor and Romana's search for the first segment is hampered by the Graff Vynda-K.

The Doctor and Romana are pursued by the Graff and attacked by the ferocious Shrivenzale.

The Doctor and Romana head to Calufrax but find that another planet has taken its place.

The Doctor and Romana encounter the Mentiads and Zanak's ruler, the cyborg Captain.

The Doctor has discovered the truth about Zanak and meets its real ruler.

The Doctor must prevent the Captain and Xanxia from using Zanak to consume Earth.

The Doctor and Romana track the Key to Time's third segment to an ancient stone circle.

The Stones of Blood: Part 2. It seems that the stones from the stone circle are alive and have a taste for human blood.

The Stones of Blood: Part 3. As the blood-hungry Ogri close in, the Doctor attempts to rescue Romana from hyperspace.

The Stones of Blood: Part 4. When the Doctor releases two alien justice machines, they sentence him to death.

The Androids of Tara: Part 2. Count Grendel is set to be Tara's new king, but the Doctor plans to scupper his scheme.

The Power of Kroll: Part 1. On the third moon of Delta Magna, the Doctor and Romana are soon caught up in a conflict.

The Power of Kroll: Part 2. The Doctor arrives in time to save Romana from being sacrificed to the bogus god, Kroll.

The Power of Kroll: Part 3. With the monster Kroll awake and angry, the Swampies are eager to sacrifice the Doctor.

The Power of Kroll: Part 4. The Doctor and Romana are appalled that Thawn intends to fire a rocket at Kroll.

The Armageddon Factor: Part 1. The quest continues as the TARDIS arrives on Atrios - a planet at war with Zeos.

The Armageddon Factor: Part 2. The Marshal demands that the Doctor devise the ultimate deterrent against the Zeons.

The Armageddon Factor: Part 3. As the Marshal prepares to launch his attack, the Doctor meets the commander of Zeos.

The Armageddon Factor: Part 4. With Mentalis on a countdown to destruction, the Doctor takes desperate measures.

The Armageddon Factor: Part 5. The Doctor and Romana arrive in the lair of the Shadow, who also seeks the Key to Time.

The Armageddon Factor: Part 6. The tragic truth of the sixth segment of the Key to Time is revealed.