The Deadly Years
Episode 12 of 26 within Season Two. Item 42 of 90 overall.
Production number 60340.
David P. Harmon - Writer
Joseph Pevney - Director
346 votes

Stardate: 3478.2--3579.4--Kirk and a landing party investigate a colony on Gamma Hydra 4 and find that most of the residents have died... of old age!They bring the last few survivors on board the Enterprise where they also die.

Meantime, it becomes apparent that everyone from the landing party is showing the same signs of accelerated aging. Only Chekov appears immune and they must find a cure before they all die of old age.

original airdate--December 08, 1967  

network: NBC

music:"Theme from Star Trek" "Where No Man Has Gone Before" by Alexander Courage 


Alien Races: Romulans

Log Entries:

  • "Captain's log, stardate 3478.2. On a routine mission to resupply the experimental colony at Gamma Hydra IV, we discovered a most unusual phenomenon. Of the six members of the colony, none of whom were over thirty, we found four had died and two were dying ... of old age."
  • "Captain's log, stardate 3479.4. The Enterprise personnel who beamed down to the planet's surface – Dr. McCoy, Engineer Scott, Mr. Spock, Lieutenant Galway, and myself – are all showing definite signs of aging. Only Ensign Chekov appears to be normal."



Space: the final frontier. These are the voyages of the starship Enterprise. Its five-year mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before.

Klingon: logh: HeH Qav'e'. DaH 'entepray' Duj lengmey lutalu'. Qu' vagh-DIS: Huj chu' qo', yISam yIn tayqeq chu', vay' boldly nuqDaq V pagh 'ej explore.

related items

Previous episode :
041 Friday's Child
Next episode :
043 Obsession

alternative title

Also known as - Klingon=DIS Deadly

regional titles

The Deadly Years
The Deadly Years
Les annees noires
Wie schnell die Zeit vergeht
Na Blianta deadly
Gli anni della morte
Los AŅos de la Muerte