The phone call comes on a Sunday, the day before homicide detective Kathy Kolla is to start her new job at New Scotland Yard, Serious Crimes Branch. But the grotesque murder that it heralds in a peaceful London suburb takes no account of the day of rest and promises a dramatic start to Kathy's new life. In fact, dramatic is the word when her only - improbable - lead draws her to an amateur drama group.
As Kathy investigates further she is lured into a piece of theatre over which, increasingly, she has little control. And as the show unfolds, a plot of brilliant complexity is revealed, escalating with gathering suspense to a climax in which Kathy's own painfully hidden past plays a shocking role.