Jon Hall

An eager scientist tests his new formula for invisibility on an escaped fugitive. When the formula works the criminal runs off to terrorize a family he believes cheated him out of a fortune years earlier.

Frank Raymond, grandson of the original Invisible Man, still has the old formula but considers it too dangerous to use, even when Axis agents try to get it. But Pearl Harbor brings him to volunteer his own services as an invisible agent in Germany. Though a bit cold (clothes aren't invisible), his adventures are more comedy than thriller (with occasional grim reminders) as he makes fools of Nazi officials and romances a luscious double agent, in search of Hitler's secret plan.