Star Trek: Deep Space Nine, Series 7, Episode 2. First broadcast on Wednesday 12 May 1999.

It’s four weeks until the Deep Space Nine finale, and so it’s time for a momentous and operatic episode, an episode full of subtext and thoughtful performances, and an episode that deals a killing blow to two crumbling empires and changes the status quo forever. In short: an episode that exemplifies everything that makes us love Deep Space Nine.