John Boessenecker is the author of ten books, including the New York Times bestseller Texas Ranger: The Epic Life of Frank Hamer, the Man Who Killed Bonnie and Clyde. He has received the Spur award from Western Writers of America, the Best Book award from Westerners International, and in 2011, 2013, and 2019, True West named him Best Nonfiction Writer. He has appeared frequently as a historical commentator on PBS, History, A&E, and other media. He is a trial lawyer in San Francisco, California.