Invisible Avenger is a 1958 film noir crime film directed by James Wong Howe, Ben Parker and John Sledge. The film is a compilation of two episodes of a 1957 Republic Pictures television pilot for The Shadow. The episodes, one directed by cinematographer James Wong Howe, were put together and released as a theatrical feature. The film was rereleased in 1962 under the title Bourbon Street Shadows by the Louisiana-based MPA films. The episodes were shot on location in New Orleans.

Plot
Pablo Ramirez is an expatriate from the Caribbean nation of Santa Cruz that is under control of a military dictator called the Generalissimo. From New Orleans, Ramirez plots a revolution and his return to Santa Cruz. To assist in this and to protect him from the Santa Cruz secret police who are in New Orleans he seeks the help of Lamont Cranston through a mutual friend, jazz trumpeter Tony Alcade. In the midst of a telephone call to Cranston, Tony is murdered by the secret police. Cranston and his metaphysical mentor Jogendra come to New Orleans to bring Tony’s murderers to justice and freedom to Santa Cruz.

Though no one knows the identity of the crime fighting trouble shooter The Shadow who has telepathic powers, everyone knows that he can be contacted for help through Lamont Cranston. As Cranston protects Pablo from secret police assassination and kidnapping attempts, the Generalissimo broadcasts the execution of Pablo’s twin brother that is shown on television in the United States in a scheme to draw Pablo into the open.

Cast
Richard Derr as Lamont Cranston/The Shadow
Mark Daniels as Jogendra
Helen Westcott as Tara O’Neill
Jack Doner as Billy Sanchez
Jeanne Neher as Felicia Ramirez
Steve Dano as Tony Alcalde
Dan Mullin as Pablo Ramirez / Victor Ramirez
Leo Bruno as Ramon “Rocco” Martinez
Lee Edwardsas The Colonel
Sam Page as Charlie, airport thug