Arthur Singer
Arthur H. Singer  wrote the teleplay for the final episode of the original Star Trek series, , based on a story by Gene Roddenberry. He was the Story Consultant for TOS during season three, replacing D.C. Fontana, who left after the second season. He was brought in by producer Fred Freiberger, who worked with Singer on other projects before. (Inside Star Trek: The Real Story, p. 393)

Fontana once remarked, that Singer "wandered onto the set and asked our set decorator, "By the way, what does that transporter thing do again?", at which point most of the crew gave up caring."  According to Robert Justman, Singer was bright and hardworking, but neither he nor Freiberger understood the Star Trek concept, and the resulting episodes suffered. (Inside Star Trek: The Real Story, pp. 393, 407)

Singer wrote one episode for the short-lived series Then Came Bronson, which was produced by fellow TOS writer Robert Sabaroff, and Bob Justman. The episode was directed by Jud Taylor.

External link 
 

nl:Arthur Singer
Writers
Story editors
Memory Alpha production staff pages without an image