Some particular evil

Who killed Susan Nicholson? Laurel Bowman has started a new life as a teacher on the isolated Suffolk coast while she tries to get over the murder of her sister. But it seems she cannot escape from death. Laurel is shocked to find that the headmaster's wife has been killed, and all the school staff are suspects. The detective in charge, idiosyncratic DI Frank Diamond, was involved in her sister's case. Together they start to unravel the truth. Soon the murderer strikes again and Laurel must fight, not just for justice, but for her life.