Nick and Nora Charles the bantering, romantically involved detective duo has become a well-used trope in literature, stage, screen, and television ever since. The characters first appear in Dashiell Hammett's best-selling last novel "The Thin Man" (1934). Nick is an alcoholic former private detective who retired when he married Nora, a wealthy Nob Hill heiress. Hammett reportedly modeled Nora on his longtime partner Lillian Hellman, and the characters' boozy, flippant dialogue on their relationship. (The novel also mentions that Nick was once a Pinkerton detective, as was Hammett.) The novel is considered one of the seminal texts of the hard-boiled subgenre of mystery novels,
Allan Pinkerton Pinkerton emigrated to the United States in 1842. In 1843 Pinkerton heard of Dundee Township, Illinois, fifty miles northwest of Chicago on the Fox River. He built a cabin and started a cooperage, sending for his wife in Chicago when their cabin was complete. As early as 1844, Pinkerton worked for the Chicago abolitionist leaders, and his Dundee home was a stop on the Underground Railroad. Pinkerton first got interested in criminal detective work while wandering through the wooded groves around Dundee, looking for trees to make barrel staves, when he came across a band of counterfeiters—who may have been