 Although S'chn T'gai has yet to be accepted as the character's family name in canon, the forenames for Sulu and Uhura first proposed in other Pocket Books "Star Trek" novels of this period (Hikaru and Nyota respectively) have subsequently been accepted as canon by Paramount, as evidenced by the usage of both names in the 2009 feature film.Numerous other Western and science fiction characters make cameo appearances throughout the book.In San Francisco, Spock plays chess with a gunfighter dressed in black, which matches the description of Richard Boone's character Paladin in the TV series "Have Gun Will Travel" (pages 180-182).