The Tiger in the Smoke

Meg Elginbrodde, a young war widow whose husband was presumed killed during the D-Day landings, has been receiving mysterious photographs that suggest he is still alive. As a thick and overwhelming pea soup fog begins to descend upon London, she meets with her cousin, the detective Albert Campion, and Inspector Charles Luke, at a train station to meet with an individual who claims to know her husband's whereabouts.