Kyle Mills is an American writer of thriller novels including "Rising Phoenix," "Fade," and "The Second Horseman." Several of his books (Rising Phoenix, Storming Heaven, Sphere of Influence, Free Fall and Darkness Falls) include a character Mark Beamon, an FBI special agent. He also wrote "The Ares Decision" (2011), "The Utopia Experiment" (2013), and "The Patriot Attack" (2015), the eighth, tenth, and twelfth installments of the "Covert-One" series, originally created by Robert Ludlum.

He is the former writer of the Mitch Rapp series of novels, having written nine books in the series after original author Vince Flynn died in 2013. In February, 2023, Mills announced he would be leaving the Mitch Rapp series after his contribution to the series, "Code Red" (2023), was published.

Mills lives in Jackson Hole, Wyoming with his wife and they are both avid rock climbers. Mills grew up in Oregon, and his father was an agent with the FBI.

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