Boardwalk Empire returns on September 25 with a second season premiere titled "21."

What can fans expect from the episode?

• Nucky will face an uprising within his inner circle.
• Chalky's world will be threatened by a KKK attack.
• Margaret will deal with with her son's disciplinary problems.
• Van Alden will celebrate his anniversary with Rose.

TV Fanatic, of course, will publish a review of the premiere the moment it concludes. In the meantime, get an early look at various scene from it via the following photos:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.