Real-life exploits of government agents come to radio life in these three adventures. First, an OSS agent parachutes into Germany in "Direct Line to Bombers" from Cloak and Dagger (originally aired on NBC on June 25, 1950). Then, Douglas Fairbanks, Jr. plays a postal inspector investigating a mail bomb in "Death in the Mail" from The Silent Men (originally aired on NBC on November 4, 1951). Finally, Henry Fonda plays an agent hunting for a spy ring operating right here in the US behind illegal radio transmitters in "Spy on the Kilocycles" from The Cavalcade of America (originally aired on NBC on October 8, 1945).