The first of two mentions of the Duras sisters in this list; three episodes into Deep Space Nine and they made their only DS9 appearance in Past Prologue. This is an appearance that sometimes gets overlooked because the episode is remembered for a different reason it features the first appearance of Garek. The Klingons are selling bomb making chemicals to a Bajoran terrorist who is seeking to permanently close the wormhole so that Bajor will be left alone by both the Federation and the Cardassians. The episode has some highlights, but it is a mostly Kira driven episode rather than a proper crossover. Including the Duras sisters was a nice touch, but really it is another nod to the fans rather than anything interesting. They could have been simply replaced by new characters and there would have been no difference to the plot. While it was an interesting episode to give an indication that not all Bajorans were fond of the Federation, it just didn't gel. While it was meant to introduce Garek, it actually ended up being the character's only appearance during season one. It was simply one of those "dodgy aliens turn up on the station and meddle" episodes.
