Review of In the Pale Moonlight

I think it goes without saying that this is almost universally viewed as the best episode of DS9. It remains as compelling as it was when it originally aired. We see the noble Captain Benjamin Sisko compromise himself in ways he did not think possible. But he "can live with it" because the price he paid on his soul saved everything he cared about.

This wasn't the first time the ethics of Star Trek was directly challenged, but I would say it was the most poignant.