A professor teaching at a correspondence school discovers that a Nazi agent is trying to prevent a trade treaty being signed between England and South America.
Release Date: February 23, 1942
October 21, 1971
October 19, 2023
November 18, 1949
November 18, 1940
December 13, 2002
November 18, 1950
August 29, 1935
June 07, 2002
May 21, 1940
October 27, 1980
November 10, 2013
March 02, 1938
November 02, 1971
December 18, 1971
September 10, 2016
March 17, 2006
December 06, 1996
January 18, 2008
March 07, 2003
November 14, 1997
