Plus One

Sequel to the Windrose series. A Las Vegas hotel is haunted by a trans-dimensional being which has started randomly killing the hotel's guests. Exiled wizard Antryg Windrose and his partner, computer programmer Joanna Sheraton are hired to investigate, and discover there are not one trans-dimensional being, but two: one of them criminal, the other insane. They must figure out what these are, and how to get rid of them, without being killed themselves.