Plot

The Invisible Man's grandson uses his secret formula to spy on Nazi Germany.

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...—Rod Crawford <puffinus@u.washington.edu>

Frank Raymond, a New York City printer, discovers the hard way that many governments know his true identity as Frank Griffin, named after his grandfather, the inventor of a drug that can make one invisible, that drug which only he now has in his possession, and that those governments would like to get their hands on it as a useful tool in war. Frank has no intention on ever selling or releasing the drug in knowing its power, but changes his mind when the US enters WWII, he only allowing its use by the US on the condition that he be the only one ever to use it in being their literally invisible agent of war. His mission behind enemy lines in Germany: to discover the Nazi plans for sabotaging the US military. Through their underground contact, Arnold Schmidt, Frank meets Maria Sorenson, a Mata Hari-esque member of the German Secret Service who would have access to people holding such information and who seemingly is working as a double agent for the Allied forces, Frank still does not completely trusting her. Beyond whether Maria is working for the Nazis or the Allieds, the other issue for Frank is that specific agents working for the Germans and the Japanese know about him and the invisibility, they taking appropriate measures under his circumstance to apprehend him to get the secret of the drug.—Huggo

Frank Raymond changed his name and took up a life as the owner of a printing shop in order to distance himself from his former identity: as the grandson of the man who invented the formula for invisibility but ended up shot down by the police. Unfortunately, it's wartime and the formula is coveted by both the Allies and the Axis. Axis spies discover Frank's true identity and force him to leave the shop. Frank believes the formula is too dangerous for any government to possess. But after Pearl Harbor, he agrees to give it to Washington D.C. on one condition: that he be allowed to become an invisible spy. Soon, Frank is behind enemy lines, romancing a beautiful double agent and playing pranks on Nazi officials. But his work is deadly serious. He soon learns of Hitler's secret plan against the United States.—J. Spurlin