a "miniseries within a series", with four or five episodes devoted to following up on events from the Mirror Universe episode "In a Mirror, Darkly". The producers also intended to bring Jeffrey Combs onto the series as a regular by placing his recurring Andorian character Shran on the bridge of the Enterprise in an advisory capacity. Work had already begun on an episode referred to by Coto as "Kilkenny Cats", which would have seen the return of Larry Niven's Kzinti, usually seen in his Known Space novels, and who had previously appeared in the Star Trek: The Animated Series episode "The Slaver Weapon". At the same time Enterprise was broadcast, writer Jimmy Diggs was pursuing the idea of a CGI animated film, Star Trek: Lions of the Night, with Captain Hikaru Sulu leading the Starship Enterprise and attempting to prevent a Kzinti invasion of the Federation. Coto's episode was based on a similar premise, with Diggs brought onto the Enterprise team to work on the episode. Production had begun on the new Kzinti ships for "Kilkenny Cats", with Josh Finney commissioned. Broadcast and release Episodes Time slots The pilot, "Broken Bow", was watched by 12.5 million viewers on the first broadcast on UPN. This was during the first full week of the new season on American television, and it was felt at the time that the combination of Enterprise alongside Buffy the Vampire Slayer and Roswell would help to cross-promote each other due to the science fiction and fantasy genre links. This even included a cross-over episode of Roswell with a character from that series auditioning before Jonathan Frakes for a role on Enterprise. After the first few weeks of episodes of Enterprise, the ratings were considered to be solid enough and the expectation was that the series would run for seven seasons in the same manner as The Next Generation, Deep Space Nine and Voyager. However, the viewing figures began to decrease towards the end of the season. Changes were made for the third season, with the introduction of the season-long Xindi storyline. This improved the reviews that the series was receiving, and the viewers in the 18 to 35 demographics, but the overall ratings continued to decrease. UPN cut the 26 episode order for the third season to 24, meaning that if 24 episodes were created for the fourth season as well then they would have the 100