Host: Lynette Walden.September brings the second and final batch of three half-hour, hard-boiled dramas, and the producers seem to be getting the knack. Based on short stories from the 1930s and ’40s, each reps a different slant on the mystery form. They all look good, with production designer Armin Ganz again displaying ingenuity in selecting L.A. settings. Intro segs, in B&W, were filmed at Los Angeles’ Union Station with host Lynette Walden. Her weak reading and unconvincing manner aren’t helped by her silly dialogue, suggestive duds or the smoky atmosphere.