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"Boardwalk Empire" cast on what's in store for season 4

Break out the moonshine once again. Nucky and his gang are up to more trouble in season 4 of "Boardwalk Empire."

This year Enoch "Nucky" Thompson (Steve Buscemi) is picking up the pieces of his Atlantic City crime organization after last season's brutal power play with Gyp Rosetti (Bobby Cannavale).

There's a lot of newcomers this year. Golden Globe winner Jeffrey Wright plays the mysterious Valentin Narcisse, a booking agent who may cause problems for Nucky. There's also Ron Livingstonas wealthy mid-Western businessman Roy Phillips, who strikes up a romantic relationship with the treacherous Gillian Darmody (Gretchen Mol).

Rosanna Arquette is another new addition to the cast. She plays Sally Wheet, a speakeasy owner in Tampa, Fla., the base of Nucky's latest bootlegging operations.

Watch the video above to see Buscemi, Wright, Livingston and Arquette speak about season 4, although they wouldn't say too much for fear of giving away spoilers.

The "Boardwalk Empire" season 4 premiere episode, titled "New York Sour," airs this Sunday, Sept. 8 at 10 p.m. ET on HBO.