The Ninth of the Month Murders

A series of murders is happening in a small town in New South Wales. At first some are not even recognised as murders but appear to be accidents and a suicide. But in all cases there is not a single clue as to the perpetrators. The Detective in charge of the case is baffled. And why are the killings all occurring on the ninth of the month? As she begins to identify the deaths as murders she is faced with a crisis that could threaten her sanity and even her life.