Classic British sci-fi adventure starring Tom Baker. The Doctor and Sarah return to Earth only discover a strangely deserted village and white-clad figures stalking through woodland.

Classic British sci-fi adventure starring Peter Davison. A Kinda seer imparts a terrifying vision upon the Doctor, who must find a way to defeat the Mara and save the Kinda.

Classic British sci-fi adventure starring Peter Davison. The TARDIS lands on Manussa where Tegan is possessed by the Mara, who plot to break into the physical world.

Classic British sci-fi adventure starring Peter Davison. The Doctor tries to halt the 500th anniversary celebrations, while a possessed Tegan finds herself in Dugale's Hall of Mirrors.

Classic British sci-fi adventure starring Peter Davison. Tegan and Lon try to locate the Great Crystal, while the Doctor finds himself in prison and reliant on Nyssa to try and get him out.

Classic British sci-fi adventure starring Peter Davison. Having escaped from jail and avoided execution, the Doctor searches for Dojjen and attempts to defeat the Mara once and for all.

Classic British sci-fi adventure starring Peter Davison. When the Doctor crash-lands the TARDIS on the planet of Frontios, he encounters a group of humans afraid of meteorite impacts.

Classic British sci-fi adventure starring Peter Davison. When the TARDIS is destroyed, Turlough is forced to resort to desperate measures, before he and Norna discover the Tractators.

Classic British sci-fi adventure starring Peter Davison. Desperately trying to save the Doctor from the Tractators' trap, Tegan soon finds herself in big trouble as well.

Classic British sci-fi adventure starring Peter Davison. The doctor finally finds the TARDIS in the tunnels beneath the planet's surface. But will he be able to get it to work again? Part 4/4.

Classic British sci-fi adventure starring Peter Davison. Strange alien canisters appear in London's docklands. Meanwhile, a prison space station holding Davros is attacked. Part 1/4.