Kitty's house of horrors - Carrie Vaughn

Talk radio host and celebrity werewolf Kitty Norville has agreed to appear on TV's first all-supernatural reality show. What she's expecting is cheesy competitions and manufactured drama starring shapeshifters, vampires, and psychics. But what begins as a publicity stunt is all too quickly turning into a fight for her life.
Kitty and her fellow housemates arrive at the remote mountain lodge where the show is set, but no sooner does filming start when violence erupts. It doesn't take Kitty long to suspect the show is nothing more than a cover for some nefarious plot. Then the cameras stop rolling, cast members start dying, and Kitty learns she and her monster housemates are not battling for a prize: they are, ironically enough, themselves the ultimate prize, in a very different game. Stranded with no power, no phones, and no way to know who can be trusted, she must find a way to defeat the evil closing in . . . before it kills them all.