A Kiss of Shadows (Meredith Gentry, Book 1)

Three years ago, Princess Meredith fled the court of her cruel Aunt Andais, the Queen of Air and Darkness, leaving that garden of decadent delights and backstabbing intrigues for the comparative calm of Los Angeles. Using her magic to pass for human, Meredith began a new life as a private investigator specializing in supernatural crime. But now Doyle, the Queen's chief bodyguard and assassin, has been dispatched to fetch her back--whether she likes it or not.