In Catalyst, award-winning authors Anne McCaffrey and Elizabeth Ann Scarborough introduced listeners to the beguiling Barque Cats: spacefaring felines who serve aboard starships as full-fledged members of the crew. Highly evolved, the cats share an almost telepathic bond with their minders, or Cat Persons ― until, suddenly, there is no “almost” about it, and a particular Barque Cat, Chester, learns to ex- change thoughts with his human friend, Jubal. Other cats soon gain the same ability. Behind the seeming miracle is a mysterious cat named Pshaw-Ra, who possesses knowledge and technology far beyond anything the Barque Cats ― or their humans ― have ever seen. When fear of a virulent plague leads the government first to quarantine and then to kill all animals suspected of infection, Pshaw-Ra―with the help of Chester, Jubal, and the crew of the starship Ranzo ― activates a “mousehole” in space that carries the refugees to a place of safety: Pshaw-Ra’s home planet of Mau, where godlike cats are worshiped by human slaves.