Space.com: Best Star Trek: Deep Space Nine episodes

Emissary is an episode full of incident: involving gambling, special orbs, subterfuge, politics, and non-corporeal aliens, to name a few, and benefits from a snappy script and charming introductions to the main cast. In Sisko’s interactions with the wormhole aliens, Emissary also features some unexpectedly deep wisdom, and holds up as one of Star Trek’s best episodes.