The death of a well known San Francisco doctor brings a charge of murder for his wife, but is it murder or suicide, and is she really his wife? The Continental Op is on the case in Dashiell Hammett’s “Zigzags of Treachery,” featured here along with two more novellas from the pages of Black Mask magazine, "The Girl with Silver Eyes" and “The Golden Horseshoe.” - Summary by Winston Tharp