The Androids of Tara is the fourth serial of the 16th season of the British science fiction television series Doctor Who, which was first broadcast in four weekly parts on BBC1 from 25 November to 16 December 1978. The serial is set on the planet Tara, which is made up of a feudal society with electronic weapons and androids. In the serial, Count Grendel of Gracht (Peter Jeffrey) kidnaps Prince Reynart (Neville Jason) and the alien time traveller Romana (Mary Tamm), along with the fourth segment of the powerful Key to Time, as part of his plot to become the legitimate King of Tara. Plot The Fourth Doctor and Romana arrive on the planet Tara in search of the fourth segment of the Key to Time. While the Doctor goes fishing, Romana finds the fourth segment. She is attacked by a native Taran bear and saved by Count Grendel, who takes Romana to his castle on the pretext of treating her injured ankle. Once there, it becomes clear that Grendel believes she is an android, because she exactly resembles the captive Princess Strella. When Grendel finds Romana is real, Romana is imprisoned in Grendel's dungeon. The noble swordsmen Zadek and Farrah recruit the Doctor to assist Prince Reynart, who must reach the throne room of the castle in time to be crowned king or forfeit his crown to Grendel. The Doctor agrees to help repair an android copy of the Prince to be used as a decoy to distract Grendel's men. Grendel strikes first, drugging the Prince and his retinue and kidnapping Reynart. When the Doctor and the swordsmen recover, they decide to crown the android Reynart instead. The Doctor and his party sneak the android Prince into the throne room, and the Prince is crowned King. Till, Grendel's manservant, arrives at the Reynart estate and offers the Doctor a chance to collect Romana. It turns out to be a trap; the real Romana has been replaced by an android. K9 detects the android Romana and eliminates it. Meanwhile, the real Romana escapes from Castle Gracht and helps the Doctor flee. Grendel, coming under a flag of truce to secretly offer the crown to the Doctor, destroys the Reynart android and recaptures Romana. The evil Count now plots to have Romana pose as Strella and marry the real King Reynart. Once they are married and she is his Queen, Reynart