Cat in A Neon Nightmare by Carole Nelson Douglas
Temple Barr's intended, Max Kinsella - sometime spy and showman magician - is going undercover to track down the elusive Synth. This mysterious and murderous organization of renegade magicians has been making Las Vegas too hot for some of Louie's human friends, particularly Max and Temple. Max has had enough. His search leads him to the neon wonderland of Nightmare, a private magic dub where reality and fantasy blur - and where the danger comes not from whom you know but what you know...and what secrets others will kill you for knowing.