The Deadly Years

"**The Deadly Years**"
"The Deadly Years"
Star Trek: The Original Series episode
Episode no.	Season 2; Episode 12
Directed by	Joseph Pevney
Written by	David P. Harmon
Featured music	Sol Kaplan; Fred Steiner
Cinematography by	Jerry Finnerman
Production code	040
Original air date	December 8, 1967
Guest appearances
	Charles Drake - Commodore Stocker; Carolyn Nelson - Yeoman Atkins; Sarah Marshall - Dr. Janet Wallace; Laura Wood - Elaine Johnson; Felix Maurice Locher - Robert Johnson; Beverly Washburn - Lt. Arlene Galway; Roger Holloway - Lt. Lemli; Eddie Paskey - Lt. Leslie; Frank Da Vinci - Lt. Brent;
Episode chronology
← Previous; "Friday's Child"	Next →; "Obsession"
	Star Trek: The Original Series season 2
	List of episodes

"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.