Doctor Who

So I was watching Merlin the other week – specifically, series one (Yes, I know I’m very far behind. I only just finished Battlestar Galactica. Don’t hate me). And there was one episode in particular – the one where they all go back to Merlin’s village and Arthur leads the defence against some evil robbers led by the bloke from Deep Space Nine – that reminded me of something. It took a couple of days, but I suddenly realised that the plot was a very clear echo of an episode of a series from 1956.