Personally I am a radio drama fan who enjoys learning about the old time radio series's and I have come across a little information I would like to share about this movie.
1) The film was made in the attempt to make a series based upon the radio series. The movie was originally intended to be a pilot episode of a "Shadow" television series.
2) Someone made a comment about Margo Lane being needed. However, the creation of the Shadow as a character predates the creation of Margo Lane. The Shadow was originally a mysterious host of the "Street and Smith Dectective Story" program. Soon, however, the creators of the series realized that the mysterious host was more famous than the series. Thus, a series of novels came out identifying the Shadow as having the ability to steal identities of other people. He did not seem to have an identity of his own. Originally, Margo Lane first met him when he was pretending to be Lamont Cranston (originally, she meets the real Lamonte Cranston and mistakes the Shadow for him. Also, the identity of Lamonte Cranston was originally an identity that the Shadow stole).
I have not personally seen the movie "Invisable Avenger". I just wanted to clear some things about the Shadow up.
