The Deadly Years
Episode 12 of 26 within Season Two. Item 42 of 90 overall.
Production number 6149-40.
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 8, 1967  

network: NBC

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


Alien Races: Romulans

Trivia--Gamma Hydra Four is a Class-M planet with a conventional oxygen-nitrogen atmosphere and normal mass.

  • Adrenaline-based treatments for radiation sickness were used after the atomic age, but research on adrenaline was abandoned when hyronalin was discovered and became the accepted treatment for all radiation sickness.


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