The Prisoner (1967)

The series follows a British former secret agent who is held prisoner in a mysterious coastal village resort where his captors try to find out why he abruptly resigned from his job. Although sold as a thriller in the mould of the previous series starring McGoohan, Danger Man (1960–68), the show's combination of 1960s countercultural themes and surreal setting had a far-reaching effect on science fiction/fantasy programming, and on popular culture in general.