Episode Title: "ARENA"
Production Number: 19
Original Air Date: 01-19-67
Captain Kirk and the crew of the U.S.S. Enterprise are invited to an Earth observation outpost on Cestus Three by Commodore Travers, who is famous for his hospitality, but when they beam down, they discover that the outpost has been destroyed and the invitation was faked. They come under attack from cold-blooded creatures with disruptors, but are able to drive them off.
The Enterprise pursues the alien ship past an uncharted star system at position 2-4-6-6-P-M, when the Enterprise is scanned from the star system, and both ships are stopped by an alien force calling itself the Metrons.
The Metrons decide to end the hostilities between the Enterprise and the Gorn ship by transporting the captains of both ships to an asteroid created as an arena for them to fight to the death. Captain Kirk finds minerals on the surface that he uses to make gunpowder, and constructs a projectile weapon that injures the Gorn captain. When Kirk decides to spare the Gorn's life, the Metrons are impressed by his display of mercy, and suggest that humans may be ready to contact the Metrons in a thousand years.
Kirk is returned to the Enterprise, which is instantly transported 500 parsecs across the Galaxy.
Factoid: Lt. Sulu is an experienced combat officer, according to Spock.
Factoid: Diamonds are perhaps the hardest substance known in the Universe, according to Kirk.
Guest Characters: Lt. Kelowitz, *Lt. DePaul, Lt. Leslie
Alien Races: *Gorn, *Metrons
KEY: [brackets]=illusions *star=first appearance