[The black dragons] "Just prior to the start of World War II, a doctor operates on six Black Dragon Society Japanese operatives and transforms them into exact duplicates of six high-ranking American businessmen who are replaced by these look-alikes. With their operatives in place, a plan to sabotage the American war effort appears to be set." [The invisible ghost] "Bela Lugosi stars in this Monogram thriller as a man living with his daughter while...