| The Enemy Within Stardate: 1672.1 / Airdate: 10.06.66 |
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| A transporter malfunction causes Kirk to be split into separate beings: one compassionate, the other savage. Spock and McCoy suffer along with their friend as Kirk confronts a side of his nature no man should see. His only hope for survival is to reunite his two selves. But Kirk's passive half is losing the ability to make decisions, and a stranded landing party is slowly freezing to death on the planet below. |
| Production Credits | ||
|---|---|---|
| Director | Leo Penn | |
| Writer | Richard Matheson | |
| Creator | Gene Roddenberry | |
| Producer | Gene Roddenberry | |
| Associate Producers | Robert H. Justman | |
| John D. F. Black | ||
| Photography Director | Jerry Finnerman | |
| Art Directors | Rolland M. Brooks | |
| Walter M. Jefferies | ||
| Theme Music | Alexander Courage | |
| Music Composer | Sol Kaplan | |
| Music Conductor | Sol Kaplan | |
| Additional Production Credits | ||
|---|---|---|
| Film Editor | Fabien Tordjmann | |
| Assistant Producer | Edward K. Milkis | |
| Assistant Director | Gregg Peters | |
| Set Decorator | Carl F. Biddiscombe | |
| Costume Creator | William Ware Theiss | |
| Post Production Executive | Bill Heath | |
| Music Editor | Robert H. Raff | |
| Sound Editor | Joseph G. Sorokin | |
| Sound Mixer | Jack F. Lilly | |
| Photographic Effects | Howard Anderson Company | |
| Script Supervisor | George A. Rutter | |
| Music Consultant | Wilbur Hatch | |
| Music Coordinator | Julian Davidson | |
| Special Effects | Jim Rugg | |
| Property Master | Irving A. Feinberg | |
| Gaffer | George H. Merhoff | |
| Head Grip | George Rader | |
| Production Supervisor | Bernard A. Widin | |
| Makeup Artist | Fred B. Phillips, S.M.A. | |
| Hair Styles | Virginia Darcy, C.H.S. | |
| Wardrobe Mistress | Margaret Makau | |
| Casting | Joseph D'Agosta | |
| Sound | Glen Glenn Sound Company | |
| A Desilu Production in Association with Norway Corporation | ||
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| Executive in Charge of Production | Herbert F. Solow | |
| For an in-depth behind the scenes look at The Enemy Within, see These Are The Voyages TOS: Season One page 167-184 (revised edition) by Marc Cushman. |