When some cloaked Romulans interrupt Space-Church, Kirk feels it necessary to investigate. But when a crew person with a bad attitude harshens the bridge’s vibe it’s time to follow a comet and learn some Vulcan history. Will Spock remember this Romulan? How many people does it take to fire a missile? Where’s the stained-glass window? It’s the episode that feels like a submarine, but lives like a warbird.