William ‘Billy’ Queen is a retired undercover agent with the United States Bureau of Alcohol, Tobacco, Firearms and Explosives – the ATF – and the author of the bestselling books Under and Alone and Armed and Dangerous. That is a short biography, but it is the right shape: for a man who spent his working life pretending to be someone else, the facts that matter are the job and the books it produced.
Writers who come to the page from law enforcement are not rare; writers who did so from undercover work, where the penalty for a poor performance is rather worse than a bad review, are another matter entirely. Queen belongs to the second category, and his books trade on that hard-earned authority.