This is a psychological thriller on the theme of revenge. Dee, a successful TV playwright, arrives at Stone's flat, having accepted an invitation to discuss a script his wife has written. She is rather surprised when Detective Superintendent Hallett, with whom she is having an affair, also arrives, apparently to investigate a matter concerning Stone's son and his involvement with a drugs' ring. Stone's intentions become clear as he slowly reveals the precise nature of the trio's relationship. It seems that, in their own way, all three are very much concerned with the business of murder.