It's the 350th episode of Down These Mean Streets, and to mark the occasion I'm celebrating with Gerald Mohr as Raymond Chandler's celebrated shamus Philip Marlowe. One of radio's best actors brings vibrant life to one of literature's greatest detectives in four old time radio mysteries: "Red Wind" (originally aired on CBS on September 26, 1948); "The Black Halo" (originally aired on CBS on January 15, 1949); "The Fatted Calf" (originally aired on CBS on September 24, 1949); and "The Open Window" (originally aired on CBS on October 8, 1949).