DS9 - The Adversary

No changeling has ever harmed another… until now. The Adversary is, obviously, a landmark episode for the character of Odo, in which he is not only forced to kill in the line of duty for the first time, but also in doing so becomes the first of his people ever to harm another. Other than this occurrence at the end of the episode, the ominous warning given to Odo by the Founder, and Sisko’s promotion at the beginning, this episode is rather ordinary. It’s by no means a bad episode, but not necessarily outstanding either.
It merely consists of the characters running around the ship trying to catch the changeling and not having much luck. In addition, the senior officers’ decision to set the auto destruct seems rather anti-climactic for an event of that magnitude. Therefore, while not, by any means, boring, the body of this episode could have been somewhat more dramatic.