Operation: Annihilate!

"Operation: Annihilate!" is the last original episode from the first season of the original Star Trek series. It is episode #29, production #29, and was broadcast April 13, 1967. It was written by Stephen W. Carabatsos, and directed by Herschel Daugherty.

Read more about Operation: Annihilate!:  Plot, 40th Anniversary Remastering, Reception, Production