Mr Logo is a familiar figure in the courts, frequently accused of indecent assault, but invariably acquitted due to lack of evidence. He is frustratingly familiar to the Crown Prosecutor Helen West, who again has just failed to prosecute him. This isn't the only set-back in her life: her long-term relationship with Geoffrey Bailey is even more brittle, and she has to deal with the insubordination of her office clerk, which unwittingly sets in motion events which push Mr Logo's rage and dark passion to lethal extremes.