Apocalypse Rising

Star Trek: Deep Space Nine  Season 5 Episode 1

Air Date: 9/30/1996

While in the Great Link ("Broken Link"), Odo suspected that the Changelings were hiding information from him. What he was able to gleen from the Link allowed him to realize that Klingon Chancellor Gowron is actually a Changeling. Starfleet requests that Sisko reveal Gowron for who he truly is and put an end to the hostile actions of the Klingon Empire.