The Enemy Within

The Enemy Within is an episode of Star Trek.
==Plot Synopsis==
It is the age-old trope of man vs. man, except in this case it involves the same man: the redoubtable Captain Jim Kirk.
In the first of many, many transporter accidents, Kirk is divided in two. One, a vicious, unthinking animal; the other, a vicious, unthinking animal with a taste for make-up.
==Trivia==
This episode pointed up the need for shuttlecraft, and the Enterprise was so-equipped later in the first season.