References to them were made in a number of other Next Generation and Star Trek: Voyager stories, but they did not appear until the 1996 fourth season Deep Space Nine episode " Indiscretion ".
References to them were made in a number of other Next Generation and Star Trek: Voyager episodes but they were not seen onscreen until the 1996 Deep Space Nine episode " Indiscretion ", which aired as part of that show's fourth season.
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