The author of several Star Trek books, Ann Crispin found that her knowledge of Star Trek acquired from being a fan of the original series came in handy when it came to writing Trek tie-in stories.
“I was a Star Trek fan from the early days of the show,” Crispin explained. “I’d watched all of the episodes many times. I had read many of the novels and all of the James Blish novelizations. So I knew Star Trek inside and out when I wrote Yesterday’s Son on a whim.”