We're catching a cable car in San Francisco with three old time radio gumshoes who live and work in the city by the bay. First, Candy Matson solves a pair of murders on an army base in "The Fort Ord Story" (originally aired on NBC on September 23, 1949). Next, Sam Spade is hired to protect a man from a vengeful ex-con in "The Champion Caper" (originally aired on CBS on August 7, 1949). Finally, Pat Novak tries to pay off a gambling debt and ends up framed for murder in an episode known as "Joe Condano" (originally aired on ABC on March 27, 1949).