Here is another of Simon Bretts fascinating blends of crime and backstage drama. This time he provides what might be described as the biography of a playfrom the cradle to the grave. Murder Unprompted takes you from the author, to an unscrupulous producer, to the theater itself, to director, to castincluding Mr. Bretts bit-player detective, Charles Paris.But trouble starts the first night. The star cant remember his lines, and worsehes shot dead on stage. Paris takes on not only his usual role of detective, but lead of the play as well . . . a role that will lead him to the perpetrators of the crime. Murder Unprompted will delight theater buffs as well as all lovers of mystery.