Star Trek Original Series V. 16

Metamorphosis: (Episode 31)
Aboard the Galileo, Kirk, Spock and McCoy are transporting ailing Commissioner Nancy Hedford (Elinor Donahue) to the U.S.S. Enterprise when a mysterious cloud draws them to a planet inhabited only by Zefram Cochrane (Glenn Corbett) -- a space pioneer who lived over a century ago.The cloud-creature rejuvenates Cochrane but, sensing his loneliness, it has brought him company -- Kirk and the others.They are now prisoners.

Friday's Child: (Episode 32)
On Capella IV, Kirk and a landing party discover that Klingons have been negotiating a alliance with the natives and seem to be gaining their confidence.When Kirk breaks a taboo by saving the life of the Capellan leader's wife, he, Spock and McCoy become fugitives -- from the natives and the Klingon agent.Meanwhile, the U.S.S. Enterprise crew have their hands full when a Klingon ship sets a trap, diverting them from the planet.