The plot revolves around the life and death of Roberto Rannaldini, a famous conductor with a reputation for being evil and manipulative. One of his ambitions is to conduct a film of the Verdi opera
Don Carlos, which is filmed at his mansion, Valhalla. The director of the film is his godson, Tristan de Montigny, who (unlike everyone else) believes Rannaldini to be good. The film is financed by Venturer - the television production company established by
Rupert Campbell-Black and Declan O'Hara in a preceding novel,
Rivals. As filming becomes more acrimonious, Campbell-Black is forced to become more involved. In parallel, Rannaldini intends to seduce Campbell-Black's daughter, Tabitha, who is also his step-daughter since Rannaldini married Rupert's ex-wife, Helen. Meanwhile, Tristan and Tabitha have an affair, and Rannaldini in revenge tells Tristan that he is the child of an incestuous relationship. Despite many people wishing Rannaldini dead, people are shocked when he is murdered, and there are several potential suspects. The murders continue after Rannaldini's death and the investigation, led by the police, ultimately leads to the discovery that the murderer was cast member Rozzy Pringle. To find the culprit, Tristan collaborates with make-up artist Lucy Latimer, and the two become romantically involved by the end of the novel. == Background ==