'Pretty Boy' Flloyd. John Dillinger. The Barkers. A lot of well-known gangsters emerged in the 1920s and 1930s; all of them criminals known as 'public enemies' to the government, and highly sought after by authorities, as you can imagine. But lesser known are the hideouts these criminals used -- and the people who ran those illegal safe houses. This is the story of husband and wife, Herb and Esther Farmer, who ran such an establishment.