The Deadly Years

"The Deadly Years"
Star Trek: The Original Series episode
Episode no.Season 2
Episode 12
Directed byJoseph Pevney
Written byDavid P. Harmon
Featured musicSol Kaplan
Fred Steiner
Cinematography byJerry Finnerman
Production code040
Original air dateDecember 8, 1967 (1967-12-08)
Guest appearances
Episode chronology
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Star Trek: The Original Series season 2
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"The Deadly Years" is the twelfth episode of the second season of the American science fiction television series Star Trek. Written by David P. Harmon and directed by Joseph Pevney, it was first broadcast December 8, 1967.

In the episode, strange radiation causes members of the crew of the Enterprise to age rapidly.