1x05 The Enemy Within - Star Trek: The Original Series Episode Guide

Star Trek: The Original Series

- Episode 01x05

Episode: 01x05
Title: The Enemy Within
Type: Regular Episode
Production Code: 6149-05
First Aired: Oct. 06, 1966

Season 1 » Episode #05 - The Enemy Within

Star Trek: The Original Series - 01x05 The Enemy Within

Summary: A transporter malfunction separates Kirk into two people: a kind and gentle vacillitating version, and a strong-willed arrogant Kirk who gives in to his every bestial urge. When the divided Kirks start to die, Spock and Scotty must work to reverse the split and save him, as well as repair the transporter so they can beam up a stranded crew.

Who appeared in this episode?

Mr. Spock

Guest Stars:

Captain James T. Kirk	played by William Shatner
Dr. McCoy	played by DeForest Kelley
Yeoman Rand	played by Grace Lee Whitney
Sulu	played by George Takei
Scott	played by James Doohan
Fisher	played by Ed Madden
Wilson	played by Garland Thompson
Farrell	played by Jim Goodwin
Connors	played by Eddie Paskey

Season 1 / Episode 5: - The Enemy Within

Scott: A few seconds after they sent this one up through the transporter, that duplicate appeared. Except it's not a duplicate. It's an opposite. Two of the same animal, but different. One gentle: this. One mean and fierce: that. Some kind of savage, ferocious opposite. Captain, we don't dare send Mr. Sulu and the landing party up. If this should happen to a man...

Season 1 / Episode 5: - The Enemy Within

Sulu: Temperature's starting to drop.
Captain James T. Kirk: Yeah, At night it gets down to 120 degrees below zero.
Sulu: That's nippy.

[More Quotes]

MISTAKES/GOOFS

CONT: Evil Kirk's phaser changes between cuts in the shoot-out in Engineering.
MISC: The first few shots of this episode are reversed for an unknown reason.
CONT: This episode begins with the Captain down on the planet's surface wearing a gold shirt with no insignia. When he beams up to the Enterprise, he is still wearing a gold shirt with no insignia, and his "evil half" also transports in wearing the same: a gold shirt without any insignia. Scotty offers to walk the Captain to his quarters and, miraculously, when we cut to the Captain and Scotty in the corridor, the Captain's shirt has sprouted an insignia as has the evil twin's shirt when he walks into Dr. McCoy's medical bay.
CONT: During the showdown between Good Kirk and Evil Kirk on the bridge, Evil Kirk's scratch marks are suddenly shown on the right cheek instead of the left as they had been throughout the episode.
MISC: When the two Kirks are confronting on the bridge the main viewing screen behind the evil Kirk is blank without any image projected to it.

TRIVIA

This is one of the only episodes in which it can be seen that the middle finger on actor James Doohan's (Scotty's) right hand is missing. Doohan lost the finger when it was struck by a bullet or shrapnel shortly after the D-Day invasion in 1944. He took great pains to conceal its absence during the series, but his full right hand can be glimpsed briefly when he reaches into the box holding the snarling dog-like creature.
The original script called for Spock to karate chop Kirk to subdue him. Leonard Nimoy felt that this would be an uncharacteristically violent act for a peace-loving species like the Vulcans so he came up with a pincer-like grasp on the neck that has since become known as the Vulcan Nerve Pinch.
Unable to beam up Lt. Sulu in this episode, the transporter was a plot device intended to eliminate the pacing and production problems involved in depicting the ship landing and taking off all the time. Budgetary constraints on effects were also a consideration. The first landing of a starship would not occur until Star Trek: Voyager episode #2.1, The 37's, broadcast 28 August 1995.
This episode has been cited as being the first one with the Vulcan Nerve Pinch. In fact, in the episode which aired the previous week, _"Star Trek" The Naked Time (1966)_, Spock applies the nerve pinch to the rampaging Mr Sulu, after which he comments, "Take D'Artagnan here down to sickbay."
Petroleum jelly was applied to William Shatner's face when the "evil" Kirk beamed into the transporter room to give an aggressive look.