It takes a serious case to bring Scotland Yard detectives to the countryside, but, without doubt, that is what the local Bobbies have on their hands. Detective John Madden, a hollow-eyed veteran of the Great War, has a knack for discovering the truth behind baffling crimes, even if his manner leaves some of the more politically savvy officers cold. In the case of the violent murder of a fine, upstanding family, the horrors presented are disconcertingly familiar to him, even if they do not match their otherwise bucolic village setting.
The mystery behind Rennie Airth’s River of Darkness unfolds in a time when class distinctions were still very real, but the 1920s was also a period of greater freedom, when some women, such as the village’s lovely Dr. Helen Blackwell, might discover other outlets for their interests and passions. All the while, men who had survived the war might not survive the battles that raged in their minds. Psychiatry was still in its infancy, and fingerprints, as well as casts of footprints and tire tracks, were the common limits of scientific investigation. The rest was up to logic, hard experience, curiosity, and intuition.