The Teacher by Tim Sullivan

With DS Ottey taking time off, DS George Cross finds himself working under DI Bobby Warner on the investigation into the murder of retired teacher Alistair Moreton. Moreton was not well-liked in the small village of Crockerne, and was sadistic and violent to the young boys when he was headmaster at a boys' school many years ago. Additionally, Moreton and his next door neighbors, the Cotterells, had a long feud. There are lots of people who would have loved to see him dead--but which one actually killed him? In this sixth book of the DS Cross series, Sullivan writes a mystery that will satisfy lovers of British police procedurals.