jason thomas butler harner (born october 9, 1970) is an american actor. he appears on stage and screen. he starred as fbi special agent roy petty in the netflix series "ozark" (2017–2018). his other tv work includes "homeland", "betrayal", "the blacklist", "ray donovan" and "next". he has also appeared in movies such as "changeling" (2008), "the taking of pelham 123" (2009), "kill the irishman" (2011) and "non-stop" (2014).