Star Trek (1966–1969)
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The Deadly Years 

A landing party from the Enterprise is exposed to strange form of radiation which rapidly ages them.



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Episode complete credited cast:
Sarah Marshall ...
Felix Locher ...
Carolyn Nelson ...
Yeoman Atkins
Laura Wood ...


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 statmanjeff

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Release Date:

8 December 1967 (USA)  »

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Technical Specs

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Aspect Ratio:

1.33 : 1
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Did You Know?


Dr. Wallace's costume was made from drapes. 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 »


McCoy: [checking out the Captain's twinge] Jim, I think we'd better run a complete physical on you.
Captain James T. Kirk: Why? Just muscular strain, hmm?
McCoy: No, Jim. It's advanced arthritis. It's spreading.
See more »


Featured in William Shatner's Star Trek Memories (1995) See more »

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User Reviews

Old Age and Wisdom
9 January 2017 | by (United States) – See all my reviews

Season 2, episode 12. The Enterprise is taking Commodore Stocker to Starbase 10 and makes a quick pit stop at Gamma Hydra IV to bring them supplies. Kirk, Spock, Bones, Scotty, Chekhov & Galway beam down to the facility where they find no one around. Chekhov goes into one of the buildings and panics & screams out - the rest come running inside to find a dead man. Bones scans him and finds he's died of natural causes, old age. Two seemingly elderly people come in, they are questioned by Kirk about their ages: 29 & 27. The two are beamed aboard ship but they die from old age. Not long after that the group that beam down all started aging rapidly -- all but Chekhov. McCoy estimated they are aging at the rate of about 30 years per day. Galway dies of old age sooner than the others due to her metabolism but the others are aging extremely quickly. To make matters worse, Romulans are in the area. It's a race against time and only their combined wisdom can save them.

Interesting concept were radiation from a comet tail caused the quick aging process. Even more interesting is the reason why Chekhov didn't age and holds the key to the answers.


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