The Continental Op is a fictional character created by Dashiell Hammett. He is a private investigator employed as an operative of the Continental Detective Agency's San Francisco office in the 1920s.
November 1927 issue of Black Mask, featuring "The Cleansing of Poisonville"
Black Mask was a pulp magazine first published in April 1920 by the journalist H. L. Mencken and the drama critic George Jean Nathan. It is most well-known today for launching the hardboiled crime sub
September 1929 cover of Black Mask, featuring part 1 of serialization of The Maltese Falcon, by Dashiell Hammett