Issue 19 has a man who is believed to be the Devil but the Black Bat reveals his trickery. Issue 25 has Nazi fifth columnists steal a supply of bauxite (aluminum ore) which America desperately needs for the war effort. Issue 27 (around this time, page count of the BB stories started dropping due to a paper shortage, to about 45 pages for a time) Prohibition is over so ex-bootleggers move into the commodity market, stopping supplies getting through.