Originally Posted by Kevin Roegele
...The Shadow was a radio show.
While there was a famous radio show based on The Shadow - that is not where the character was really created.
The Shadow was a pulp hero; The Shadow Magazine
was published twice a month for the majority of the magazine's run. The famous radio show would debut only after the pulp fiction magazine had been published for 6 years.
Now before anyone comes along with 2 cents, yes the vague notion of a mysterious character called The Shadow first premiered on July 31, 1930 as a host/narrator for Street & Smith's Detective Story Hour.
The host proved unexpectedly popular and some smart executive knew a great opportunity when he saw it. The creation of The Shadow
as a character/property happened when Walter Gibson was paid to do so by S&S and made history.