The Shadow knows what evil lurks in the hearts of men! The legendary radio hero, the mind-clouding man of mystery returns in "The Invisible Avenger" (1958), a film-noir tale set in New Orleans, where nothing is ever as it seems. Dan Mullin plays exiled Spanish leader Pablo Ramirez, who is hiding out on Bourbon Street as plans are laid to overthrow the oppressive dictatorship that currently exists in his country. Richard Derr, who plays the Shadow, is summoned to protect Ramirez and thus ensure a successful revolution. The Shadow summons up his supernatural powers of hypnosis and invisibility to save Ramirez and stop his enemies' diabolical exploits.