Rapid aging afflicts all six colonists on Gamma Hydra IV and five members of Kirk's six-man landing party - all but Chekov. With the Neutral Zone so close, suspicion falls on the Romulans testing a new weapon, but is it? With time running out, answers are elusive. As Kirk's memory progressively deteriorates, regulations necessitate a competency hearing no one wants - the outcome of which may eventually lead the Enterprise to its destruction with all aboard. Written by
Did You Know?
Each crew member displays different symptoms of aging: Captain Kirk suffers from short-term memory loss and arthritis, Spock becomes hypersensitive to temperature changes, McCoy becomes more moody and irritable, Galway suffers from hearing loss, and Scotty finds that he is always tired. See more
In the final shot, Chekov is suddenly wearing a wig instead of his natural hair. (The shot was obviously borrowed from an earlier episode.) See more
Oh, you're perfectly healthy.
I must differ with you, Doctor. I'm having difficulty concentrating, which is most disturbing, my eye sight appears to be failing, and the normal temperature of the ship seems to me to be increasingly colder.
I did not say you weren't affected, Mr. Spock. You are perfectly healthy. That is, for any normal Vulcan on the high side of 100.