American science-fiction author (1950–2013) who wrote the Star Trek novels Yesterday's Son, Time for Yesterday and Sarek, exploring the families of Spock and his father.
Ann C. Crispin, who published as A. C. Crispin, was an American novelist whose career began with a Star Trek book and who became known for tie-in fiction as well as her own StarBridge series.
Yesterday's Son, published in 1983, is a sequel to the episode All Our Yesterdays in which Spock learns that he fathered a son, Zar, with Zarabeth in the ice age of Sarpeidon. It was among the first Star Trek novels to reach the general bestseller lists, and she continued the story in Time for Yesterday.
Crispin also wrote The Eyes of the Beholders for The Next Generation and the hardcover Sarek in 1994, which follows Spock's father after the death of Amanda.