Boardwalk Empire has hired Patricia Arquette for a big season four role. She’ll play “Sally Wheet, a tough-as-nails Tampa speakeasy owner with connections to local gangsters.†It’s Arquette’s first recurring TV gig since Medium wrapped in early 2011. Boardwalk has been staffing up in recent weeks, adding Office Space’s Ron Livingston and The Manchurian Candidate’s Jeffrey Wright.