The callous disregard Dr. Leonard "Bones" McCoy (DeForest Kelley) has for his patients in this Star Trek: The Original Series episode still leaves me shaking my head. Bones, of course, was Chief Medical Officer of the USS Enterprise in Star Trek: The Original Series, Star Trek: The Animated Series , and the first six Star Trek movies.

In Star Trek: The Original Series season 1 , episode 4, "The Enemy Within," a transporter accident separates Captain James T. Kirk (WIlliam Shatner) into 'good' and 'evil' versions. Without his darker side, the 'good' Kirk is weak and indecisive. Meanwhile, the 'evil' Kirk is a dangerous menace until Mr. Spock (Leonard Nimoy) is able to merge the two Kirks back into one, complete Captain.

"The Enemy Within" explores Kirk's character and how

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