The Doctor and Ace receive a mysterious distress signal and land in the Earth village of Carbury, where a nuclear convoy has halted. The Doctor's concern is heightened when knights from another dimension begin to land in the area. Nearby is Lake...
Reluctantly cancelling his well-earned holiday, the Doctor sets off in the TARDIS to trace and re-assemble the six segments of the Key to Time on which the stability of the entire Universe depends.
Assisted by the argumentative Romanadvoratrelundar...
The Doctor, Romana and K-9 continue their search for the six disguised segments that make up the powerful Key to Time.
The TARDIS lands on Earth close to the Nine Travellers, an ancient stone circle. Professor Amelia Rumford and her associate Vivien...
Set deep in the darkest heart of Victorian London, the Doctor and Leela are confronted by a series of bizarre and horrific events.
An innocent cabbie is viciously slain by the agents of a secret Chinese cult; young women disappear quietly and...
A spacecraft crashes near the castle of a robber baron in the Middle Ages, and the Sontaran Warrior within needs help with its repair. Unable to obtain the technical expertise he requires, he ventures forward in time to the 20th century and begins...
The year is 2084, and two power-blocs are poised on the brink of war. Using a series of undersea complexes and deep-space satellites, each bloc carefully monitors the other's movements, slowly edging towards the moment when one will launch an...
Eminent scientist Emil Keller has developed a revolutionary new process for the treatment of hardened criminals. His invention, the Keller Machine, is being heralded as a major scientific breakthrough.
But Professor Keller is in truth the Master and...
En route to Kew Gardens, the Doctor and Peri are more than a little surprised when they land in the middle of a slag heap in England at the time of the Luddite uprisings.
Unknown to the Doctor, his TARDIS has been dragged off course by the Master...
On a remote rocky island a few miles off the Channel coast stands the Fang Rock lighthouse. There have always been tales of the beast of Fang Rock, but when the Tardis lands here with Leela and the Doctor, the force they must deal with is more...