Cambridge 1939. The opening weeks of the Second World War and the first blackout - The Great Darkness - covers southern England enveloping the city. Detective Inspector Eden Brooke a wounded hero of the Great War takes his nightly dip in the cool waters of the Cam. Daylight reveals a corpse on the riverside the body torn apart by some unspeakable force. Brooke investigates calling on the expertise and inspiration of a faithful group of fellow “nighthawks” across the city all condemned like the detective to a life lived away from the light. Within hours The Great Darkness has claimed a second victim. War it seems has many victims but what links these crimes of the night?

Part of the Nighthawk Series series.