Leonard McCoy payment for his appearance. In the "" episode "", McCoy mentions he has a daughter, Joanna. Although Chekov's friend Irina in the original series episode "The Way to Eden" was originally written as McCoy's daughter, it was changed before the episode was shot. In the 2009 "Star Trek" film, which takes place in an "alternate, parallel" reality, McCoy and Kirk become friends at Starfleet Academy, which McCoy joins after a divorce that he says "left [him] nothing but [his] bones." This line, improvised by Urban, explains how McCoy earned the nickname "Bones". McCoy later helps get Kirk posted aboard the
The Doomsday Machine (Star Trek: The Original Series) The Doomsday Machine (Star Trek: The Original Series) "The Doomsday Machine" is the sixth episode of the of the American science fiction television series "". Written by Norman Spinrad and directed by Marc Daniels, it was first broadcast on October 20, 1967. In the episode, the starship "Enterprise" fights a powerful planet-killing machine from another galaxy. The Federation starship USS "Enterprise", following a trail of mysteriously destroyed star systems, picks up the automated distress beacon of another starship, the USS "Constellation". Upon arrival, the "Constellation" is found drifting in space and severely damaged; Captain Kirk, Chief Medical Officer Dr. McCoy,