In 1874, Napoleon Augustus Jennings moved to Texas to join the Rangers under the command of L. H. McNelly. A year later, Jennings was thrown into the conflict between the native Spanish speaking Americans and the English speaking whites who came to settle the area. In an era of cattle thieving and terror, we follow Jennings through the southern border of Texas and find a vivid portrait of life in the late 19th century in one of the most lawless and hardest places to live in the United States.