Not only does this ambitious and atmospheric Season 2 serial contain the fourth most watched episode in Doctor Who history, it was also the most watched episode of Doctor Who in the 1960s as 13.5 million people tuned in for its titular opening installment, 'The Web Planet', which aired on 13th February 1965.
Dan Butler is the Doctor Who Editor at WhatCulture.com. When he isn't writing his own articles or editing other people's, he can be found trawling the internet for gifs of Steven Moffat laughing. Contact him via dan.butler@whatculture.co.uk.
