Carroll John Daly 
Three Thousand to the Good [EPUB ebook] 
Race Williams #2 (Black Mask)

Race Williams—the classic hard-boiled detective from the pages of Black Mask Magazine—takes on the biggest blackmailing scheme of his career. Plus a bonus Daly hard-boiled classic: ‘Paying an Old Debt.’ Story #2 in the Race Williams series.
Carroll John Daly (1889–1958) was the creator of the first hard-boiled private eye story, predating Dashiell Hammett’s first Continental Op story by several months. Daly’s classic character, Race Williams, was one of the most popular fiction characters of the pulps, and the direct inspiration for Mickey Spillane’s Mike Hammer.