Star Trek: Deep Space Nine: Season 7, Episode 18

7 - 18: 'Til Death Do Us Part

On DS9, Sisko agonizes over his vision from the Prophets, warning him not to marry Kasidy, and Kai Winn receives a vision foretelling the arrival of a guide who will help her restore Bajor. Meanwhile, Ezri and Worf are interrogated aboard a Breen ship and unexpectedly witness a disturbing turn of events, one which may change the course of the entire war.