Written by Curt Siodmak Directed by Edwin L. Marin Starring Jon Hall, Ilona Massey, Peter Lorre, Cedric Hardwicke US Release ex: Aug. 7, 1942 RT 81 Home Video Universal Studios Home Entertainment Classic Horrors rating = 6 (out of 10) Finally, there’s an invisibility movie with a true purpose: spying on Nazi Germany!  Considering that Invisible Agent (1942)…