Jonathan Kimble Simmons (born January 9, 1955) is an American character actor and voice actor. In television, he is known for playing Dr. Emil Skoda on the NBC series Law & Order , neo-Nazi Vernon Schillinger on the HBO prison-drama Oz , and Assistant Police Chief Will Pope on TNT 's The Closer . Since 2017, he has executive produced and starred as Howard Silk in the Starz series Counterpart .
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Grant's accent is an inheritance from his mother; and, on Inside the Actors Studio in 2002, he credited her with "any acting genes that [he] might have."  Both his parents were children of military families,  but, despite his parents' backgrounds, Grant has stated that his family was not always affluent while he was growing up.  Grant spent his childhood summers shooting and hunting with his grandfather in Scotland.  Grant has an older brother, James, living in Portugal.