Fontana saw a position on a
Marine Corps-based series called
The Lieutenant and applied; In 1964, she published her first novel, a Western called
Brazos River, with Harry Sanford. She worked the premise into the script for "
Charlie X", although she gave Roddenberry the story credit and only took the teleplay credit for herself. It was broadcast as the second episode of the series. Although this was an adapted story, she also wrote "
Tomorrow Is Yesterday" from her own idea. By the middle of the first season
Steve Carabatsos, the story editor, had already left the production, and it appeared that the second editor,
John D. F. Black, was also planning to leave, Fontana subsequently came up with the ideas for the episodes "
Journey to Babel" and "
Friday's Child". There were other works that she was formally credited with based on the Writers Guild arbitration that were only re-writes of episodes. alongside Roddenberry,
Gene Coon and Carabatsos who had all made changes at different times to Ellison's displeasure. Fontana's draft, submitted on January 23, 1967, was superseded by three further versions by Roddenberry. Fontana left the team prior to the
third season, but continued to write scripts on a freelance basis. These included "
The Enterprise Incident", "
That Which Survives", and "
The Way to Eden"; the last two were credited under the
pseudonym Michael Richards. She disliked some of the changes made in "The
Enterprise Incident", such as the size of the
cloaking device, and found working with her replacement difficult, as the new story editor,
Arthur H. Singer, did not understand the basics of the series, such as what the
transporter did. She had a further disagreement with producer
Fred Freiberger as to how old
Leonard McCoy was meant to be as "The Way to Eden" was developed.
Leonard Nimoy credited her for expanding
Vulcan culture within
Star Trek. He was unsure when "
This Side of Paradise" was proposed, as Fontana had changed the romantic lead from
Hikaru Sulu to
Spock but he enjoyed being able to act out emotions with the character, and also praised her work on "Journey to Babel" and "The
Enterprise Incident". Fontana's freelance status meant that she could write for several series, including Westerns once again. == Becoming a producer ==