The novel is about a murder that occurs on a reality television programme called House Arrest, which is very similar to the program Big Brother, and the efforts of three police officers to identify the killer by watching all the video recordings of the ten housemates while the remaining housemates continue the reality television show. The novel jumps back and forth in time to show the events in the live video recordings, leading up to the night of the murder, where the remaining eight housemates at the time had to remain in an Indian sweat box- an old-style sauna with a pitch-black interior, the intention being to prompt the housemates to have sex-; the victim left the box to go to the toilet and the killer apparently left the box wrapped in a sheet to conceal his or her identity and stabbed the victim twice in the neck and head.
Later, a note is found in an envelope that had been sealed weeks previously that says that the victim will be dead by the time the housemates read the note and that one of the three remaining housemates will be murdered. The police have to catch the killer before he or she strikes again.
The killer is revealed on the final night of the show to be the show\\\'s producer, who had set up the murder to attract increased ratings for the show, faking the video footage of the killer leaving the sweat-box with the aid of her deputy producer; Detective Coleridge, an amateur actor, provokes a confession by creating fake video evidence of the producer\\\'s rehearsal murders.