Red Harvest, by Dashiell Hammett, 1929.
With a title like "Red Harvest" and with Dashiell Hammett as the author, I did expect a pretty high body count -- just not quite this high. That doesn't mean I didn't like the book; I did. It just means that I am a little worried about myself because I liked the book.
Hammett's writing is gritty and whip-smart. This book felt like the beginning of the noir genre.