Art Wallace

Writer — The Original Series

American television writer who wrote the second-season episodes Obsession and Assignment: Earth, the latter conceived with Gene Roddenberry as the pilot for a separate series.

Art Wallace was an American television writer, known above all for shaping the early storylines of the daytime serial Dark Shadows. He wrote two episodes of the second season of the original Star Trek.
Obsession pits Kirk against the vampiric cloud creature that killed half the crew of the USS Farragut when he was a young lieutenant.
Assignment: Earth, the season finale, sends the Enterprise back to 1968, where it meets the mysterious agent Gary Seven, played by Robert Lansing, and his secretary Roberta Lincoln, played by Teri Garr. Wallace wrote the teleplay and shared the story credit with Roddenberry; the episode was designed to launch a spin-off, which was not picked up.