Stardate:1672.1--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.
Elsewhere, 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.
original airdate--October 06,1966
music: "Theme from Star Trek" "Where No Man Has Gone Before" by Alexander Courage
Alien Races: Alpha 177 quadrupeds
Factoid: Spock is half-human, half-alien.
Space: the final frontier. These are the voyages of the starship Enterprise. Its five-year mission: to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before.
Klingon: logh: HeH Qav'e'. DaH 'entepray' Duj lengmey lutalu'. Qu' vagh-DIS: Huj chu' qo', yISam yIn tayqeq chu', vay' boldly nuqDaq V pagh 'ej explore.