In May 1870, seven members of the Marshall family, including three small children, were found brutally murdered in their home in Denham, Buckinghamshire. They had all been bludgeoned to death with a sledgehammer, an axe and a poker. The crime scene looked like a battlefield or a slaughterhouse. In THE DENHAM MASSACRE, retired Metropolitan police officer Neil Watson provides the first full-length study of this sensational but largely forgotten...