Universal joins the American war effort with the propaganda film _Invisible Agent_. When America enters World War II following the bombing of Pearl Harbor, Frank Griffin Jr. volunteers for a top secret spy mission, using his grandfather’s invisibility serum, to retrieve a list of German and Japanese spies operating in the U.S. Starring Ilona Massey, Sir Cedric Hardwicke, and Peter Lorre, the film has a strong cast that delivers some pretty good performance. And, once again effects artist John P. Fulton attempts some new invisibility tricks (to varying degrees of success). Unfortunately some of the broad comedy from the last film carries over; resulting is some tonal problems, as the silly invisibility gags clash with the spy drama. Yet while it has a few problems, _Invisible Agent_ is an entertaining spy film that’s full of thrills.