The Cold Case Billy the Kid Megahoax: The Plot to Steal Billy the Kid's Identity and to Defame Sheriff Pat Garrett as a Murderer - Paperbackby Gale Cooper (Author) Gale Cooper, a Harvard Medical School educated M. D. forensic psychiatrist, draws on her 20 years of Billy the Kid writings and research to write Cold Case Billy the Kid: The Plot to Steal Billy the Kid's Identity and to Defame Sheriff Pat Garrett as a Murderer. It is the definitive debunking of Billy the Kid imposter hoaxes: old men who claimed to have survived Sheriff Pat Garrett's famous July 14, 1881 shooting and to have