Jadzia opts to risk her future with Starfleet in order to fulfill a blood oath made by Curzon with three Klingon warriors.
Kirk challenges Trelane (William J. Campbell), ruler of the world Gothos, to a duel for the lives of the Enterprise crew.
Ravenous, furry tribbles, irate officials and hostile Klingons complicate an Enterprise cargo delivery.
A fleeing outlaw's (John Saxon) survival in the harsh badlands depends on an Indian woman (Arlene Martel).
During a flood, a nurse convinces an alcoholic medical corpsman to kick the bottle. With Loretta Young.