Watch Doctor Who, Monsters: The Master

The Doctor faces the end of his life as the Master's plans hurtle out of control. With the sound of drums growing louder, and an ancient trap closing around the Earth, the Doctor and Wilf must fight alone. But sacrifices must be made, and the deadly prophecy warns: 'He will knock four times.'

The Doctor's psychotic nemesis the Master has been reborn, on Christmas Eve. With both determined to cheat death, the battle rages from the wastelands of London to the mysterious Immortality Gate, while the alien Ood warn of an even greater danger approaching, as a terrible shadow falls across the entire Universe.

The Doctor catches up with his old enemy, the Master. Can anyone stop the Nestene Consciousness?

The Doctor and the Brigadier trace the Master to the plastics factory but they are too late. The only clue to the Master's plans is a single plastic daffodil.

The Doctor investigates Rossini's International Circus. The Master, meanwhile, has assumed control at the plastics factory and is manufacturing new lines of living plastics.

The Master arrives on Earth in his TARDIS, camouflaging it as a horse box in a Circus. He immediately contacts the Nestenes and assists them in mounting a second invasion of Earth. The Doctor and his new assistant, Jo Grant, have to tackle the Autons, the Master and a large number of deadly daffodils!