Which 1960s spy series, starring Patrick McGoohan as a secret agent imprisoned in a surreal coastal village, ended with one of the most debated finales in television history?

• A Danger Man
• B The Prisoner ✓
• C The Avengers
• D The Saint

The Prisoner ran for 17 episodes from 1967 to 1968; its final episode 'Fall Out' remains famously ambiguous, and the show's themes of individualism versus authority continue to generate analysis.