(written from a Production point of view)
Norman Richard Spinrad (born 15 September 1940; age 74) is a science fiction writer who has occasionally contributed episodes to television, most notably "The Doomsday Machine" for Star Trek, an episode that garnered him a Hugo Award nomination.
Another script he wrote, entitled "He Walked Among Us" was not filmed, due to his own request, after producer Gene Coon rewrote it to a comedy.  Recently Spinrad reconfigured the story with original characters and settings, and posted it as an on-line novel.
For the aborted Star Trek: Phase II, Spinrad wrote a script entitled "To Attain The All."
Currently, Spinrad is set to direct "He Walked Among Us" as an episode of the fan film series, Star Trek: Phase II (formerly Star Trek: New Voyages).