Episode Title: "PATTERNS OF FORCE"
Production Number: 52
Original Air Date: 02-16-68
Starfleet has been out of contact with John Gill, a cultural observer, for six months, and the United Space Ship Enterprise has been sent to a star system to find him. As the Enterprise passes the outer planet, Zeon, and approaches the inner planet, Ekos, a probe with a thermo-nuclear warhead attacks the Enterprise.
According to records, Ekosians were a primitive, warlike people in a state of anarchy, and the Zeons were a peaceful people with interplanetary spaceflight capability. Captain Kirk and Commander Spock beam down to Ekos and find the society emulating Nazi Germany of Twentieth Century Earth -- with John Gill as the Fuhrer -- unified in a war against the neighboring Zeons.
Kirk and Spock encounter an underground resistance movement, which helps them get into Nazi headquarters, and they find John Gill, drugged and kept as a figurehead leader by an Ekosian named Melakon. Spock uses a Vulcan mind probe to revive Gill, who confesses to violating the non-interference directive and using the efficient Nazi regime as a model to unify the warlike Ekosian society, but Melakon drugged him and seized power, waging a war against the more-advanced Zeons with Gill's new technology.
Melakon is exposed as a traitor and is killed after he kills John Gill. With the resistance leaders in control of Ekos, the Enterprise leaves the two planets to make peace, and possibly to join the Federation one day.
Factoid: John Gill was James Kirk's instructor at the Academy.
Alien Races: *Ekosians, *Zeons
KEY: [brackets]=illusions *star=first appearance