As the Enterprise approaches planet Omega IV, they find another starship, the U.S.S. Exeter, in orbit. Kirk, Spock and McCoy beam aboard to find the ship abandoned but strewn with uniforms and crystals. The last log entry from the ship's surgeon tells them they have been infected with a deadly virus brought aboard from a returning landing party. Kirk's party beams down to the planet's surface and finds there is one Exeter survivor: Captain Ron Tracey. He has apparently ignored the Prime Directive and has taken sides in a local dispute supporting the Kohms against their arch-rivals, the Yangs. As McCoy tries to find a cure for the virus, Spock and Kirk try to make sense of the situation. They eventually realize there is an odd parallel with Earth's own history. Written by
Did You Know?
Morgan Woodward (USS Exeter Captain Ronald Tracey) had previously played another wild-eyed madman, Simon Van Gelder in "Dagger of the Mind". See more
When Kirk is stating in his Log who shall beam down to the planet, he says "Lt. Galway" but the character's name is "Lt. Galloway." See more
Outside. Or I'll burn down both your friends now.