Throughout most of the 1940's, Matt Cvetic worked as a volunteer
undercover agent for the FBI, infiltrating the Communist Party in
Pittsburgh.  In 1949, his testimony helped to convict several top Party

members of conspiracy to overthrow the U.S. government.  Cvetic sold
his account to "The Saturday Evening Post" and it was serialized under
the title "I Posed as a Communist for the FBI".  It later became a
best-selling book.  In 1951, Warner Brothers released a film based on
these accounts entitled "I Was A Communist For The FBI", starring with
Frank Lovejoy as Cvetic.


In 1952, in the midst of the Red scare of the 1950's, the Frederick W.
Ziv Company produced the syndicated radio series with the same title
as the movie.  It was produced without assistance from the FBI, which
refused to cooperate.  Dana Andrews played the role of Matt Cvetic for
the full 78-episode run of the series.  Each episode ended with Dana
Andrew's well-remembered words, ""I was a Communist for the FBI. I
walk alone".