Frederick Ziv was one of the biggest producers of syndicated radio and TV shows in the 1940s and 50s. His programs boasted big name stars, established properties, and great production values, and his companies raked in millions of dollars each year from sales of shows directly to small sponsors and local markets. We'll hear four of his old time radio mystery shows: "The Harry Walker Killing," starring Richard Kollmar as Boston Blackie; Jackson Beck as Philo Vance in "The Poetic Murder Case;" I Was a Communist for the FBI, starring Dana Andrews in "No Second Chance;" and Humphrey Bogart and Lauren Bacall in "The Blue Moon," a tale of tropical adventure from Bold Venture.