Star Trek S1E27 — The Alternative Factor

5.7

Star Trek•Season 1•Episode 27

The Alternative Factor

5.7/10 · 4,611 votesMar 30, 196751 min

Ranked #29 of 29 in Season 1•−1.9 vs season avg

Kirk and Spock encounter an alien named Lazarus who claims to be from an anti-matter universe.

Directed byGerd Oswald

Written byDon Ingalls

Previous episodeE26 · Errand of Mercy Next episodeE28 · The City on the Edge of Forever

Seasons3

Cast6

William Shatner

William Shatner

James T. Kirk

Leonard Nimoy

Leonard Nimoy

Spock

DeForest Kelley

DeForest Kelley

Dr. McCoy

James Doohan

James Doohan

Scott

George Takei

George Takei

Sulu

Nichelle Nichols

Nichelle Nichols

Uhura

Crew12

Gerd Oswald

Gerd Oswald

Director

G

Gerald Perry Finnerman

Director of Photography

R

Rolland M. Brooks

Art Direction

W

Walter M. Jefferies

Art Direction

D

Don Ingalls

Writer

Alexander Courage

Alexander Courage

Music

J

James Ballas

Editor

W

William Ware Theiss

Costume Design

M

Michael S. Glick

Assistant Director

I

Irving A. Feinberg

Property Master

F

Fred B. Phillips

Makeup Artist

V

Virginia Darcy

Hairstylist

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Episode Summary

"The Alternative Factor" is episode 27 of Star Trek season 1. It scored 5.7/10 from 4,611 votes, ranking #29 of 29 episodes this season (season average 7.6). Directed by Gerd Oswald and written by Don Ingalls, it aired on March 30, 1967.

Next: E28 · The City on the Edge of Forever Best of Season 1