EXCLUSIVE: The Hurt Locker co-star Brian Geraghty has joined the cast of HBO‘s Boardwalk Empire as a recurring for the period mob drama’s upcoming fourth season. He will play Loren Knox, a prohibition agent with ulterior motives newly assigned to Atlantic City. Season 4 is currently in production for a debut later this year. This marks Geraghty’s second major series gig following a recurring role on another HBO series, True Blood. On the film side, he recently co-starred in Flight and Ass Backwards, which premiered at Sundance. Geraghty is with UTA, Management 360 and attorney Craig Emanuel.