Just in time for the Academy Awards, "Down These Mean Streets" presents a bonus episode featuring a trio of Oscar-winning radio detectives. First, Frank Sinatra is Rocky Fortune in “Shipboard Jewel Robbery” (originally aired on NBC on October 20, 1953). Then, Van Heflin is Raymond Chandler’s Philip Marlowe in “Trouble is My Business” (originally aired on NBC on August 5, 1947). Finally, Rex Harrison stars in “Hidden Thoughts Of A Feminine Mind…Concerned With Murder” from The Private Files of Rex Saunders (originally aired on NBC on July 4, 1951).