It is winter 1946. One cold dark night, as a devastated London shivers through the transition to post-war life, a young nurse goes missing from the South London Hospital for Women & Children. Her body is discovered hours later behind a locked door. Two women from the hospital join forces to investigate the case. Determined not to return to the futures laid out for them before the war, the unlikely sleuths must face their own demons and dilemmas as they pursue - The Midnight Man.