Patricia Arquette

Patricia Arquette has joined the cast of Boardwalk Empire for Season 4, TVGuide.com has confirmed.

The former Medium star will play Sally Wheet, a Tampa speakeasy owner who has connections to the local gangsters, according to Deadline, which first reported the news.

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Ron Livingston, Jeffrey Wright, Brian Geraghty and Eric Laden will also appear on the new season, which will debut on HBO later this year.