Mary Doria Russell is the award-winning author of four previous bestsellers: The Sparrow, Children of God, A Thread of Grace, and Dreamers of the Day. Widely praised for her meticulous research, fine prose, and compelling narrative drive, Russell is uniquely suited to telling the story of the lawman Wyatt Earp and the dental surgeon John Henry Holliday. The daughter of Dick Doria, five-term sheriff of Dupage County, Illinois, Mary grew up with guns and cops but she also holds a doctorate in biological anthropology and taught gross anatomy at the Case Western Reserve University School of Dentistry before she left academe to write.