Ronicky Doone is a novel written by Max Brand. Bill Gregg teams up with professional gambler Ronicky Doone on a journey that brings the two Westerners to New York. Ronicky Doone has a reputation as a champion of hopeless causes. Western legend Ronicky Doone is admired by law-abiding citizens and despised by bushwhacking robbers. In order to meet his lady love for the first time, Bill Gregg is not about to let anything stand in his way. He is prepared to confront the living legend in order to do so. The two develop a bond after their first encounter and follow the girl eastward to New York City. Ronicky has to figure out the girl's secret after they find Caroline Smith and she won't go. As they try to save Caroline and make their way back to the mountain desert of the west, they run into the evil John Mark and the lovely Ruth Tolliver and are exposed to the horrors and vices of city life.