From a planet bereft of life for half a million years, the Enterprise hears the voice of Sargon, who is able to control the ship and tells them to transport to specific coordinates which target them to a subterranean chamber. The away party consisted of Kirk, Spock, McCoy and astro-biologist Ann Mulhall; the security guards they planned to take along were prevented from de-materializing. Sargon is one of only three survivors of the planet's intelligent race - pure energy, matter without form. They tell the away party that they once started life on Earth and many other places. Suddenly Sargon possesses Kirk's body, saying he requires Spock and Ann Mulhall's bodies, too, in order to give the only other survivors of his race new life. He promises the bodies will be returned after they build superior mechanical robots as their definitive bodies, then leaves Kirk's and allows them to beam up and freely make up their minds. McCoy isn't tempted by curiosity and potential benefits, but Kirk ... Written by
Did You Know?
In Kirk's speech on risk, he states "Do you wish that the first Apollo mission hadn't reached the moon?" At the time of the original airing, only one year after the launch pad fire that killed the Apollo 1 crew, reaching the moon was far from certain and the risks were enormous. See more
Although there are inconsistencies on this matter, it is generally accepted that when beaming down from the transporter room it is necessary to be standing directly on the plates in the floor. In "Tomorrow is Yesterday", Spock takes Captain Christopher by the arm and points to the plate to get him positioned correctly, but in "The Savage Curtain", no one notices that President Lincoln is not positioned correctly on the plate, yet he successfully beams down anyway. In this episode the two security guards are not standing fully on their plates and indeed neither of them beam down - although the reasoning for this is that Sargon does not want them to do so. See more
[in astonished disbelief
You're going to WHAT? Are they all right in the head, Doctor?
A simple transference. Their minds and ours.
Quite simple. happens every day.
Referenced in Criminal Minds: The Big Game