Boardwalk Empire [OV]

Season Four Premiere. Nucky brokers a peace; Atlantic City gets a new prohibition agent; Chalky opens a new club; Richard reverts to his violent past.

Van Alden is ordered to keep tabs on Al Capone; Harlem gangster Dr. Valentin Narcisse arrives in Atlantic City, clashing with Chalky and Nucky; Agent Knox aligns himself with J. Edgar Hoover; Harrow fails to finish a job in Milwaukee.

Nucky has reservations about investing in a Tampa land deal; Valentin Narcisse books a sexy jazz singer to perform at the Onyx; Willie, Eli's son, turns to Mickey Doyle to elevate his social standing in college; Harrow tries to bury his past.

Nucky gets to know Arnold Rothstein over a card game, and sizes up an unexpected partner for his Tampa land deal; Eddie Kessler gets detoured after making a delivery; Agent Knox fills Hoover in on the Thompson operation.

Nucky heads to Philadelphia to deal with the fallout from Willie's liquor fiasco; Eddie Kessler is detained by Agent Knox; Gillian turns to an unexpected source to score a fix; Van Alden is recruited by the Capones for a job.

After a cautious reunion with Margaret, Nucky heads to Tampa to work out details of his land deal with Bill McCoy. While there, he reconnects with Sally Wheet. Richard Harrow returns to Atlantic City. Knox finds a new way to gain Eli's trust.

Eli confronts Nucky after Willie makes an unpopular decision. Margaret has a surprise encounter at her job. Gillian goes cold turkey. Al Capone tries to get Johnny Torrio to turn onDean O'Banion. Valentin Narcisse exerts his control over Purnsley.

Nucky's shipment from Florida arrives with some unexpected cargo. Eli is backed into a corner after Agent Knox uncovers some new dirt on the Thompsons. Willie reconsiders his recent choices. Chalky throws down the gauntlet toward Valentin Narcisse.

Nucky refuses to back Chalky in his conflict with Narcisse. Julia considers her options after Gillian makes her case in court. In Cicero, Van Alden stands up to Capone and comes clean to O'Banion. Rothstein looks to trade an insurance benefit for cash.

Tipped off by Sally Wheet, Nucky enlists Eli and Agent Knox to check out extra cargo in Florida shipments. Margaret considers making a deal with Rothstein to improve her family's living conditions. Capone grows suspicious of Torrio; Nucky faces a dilemma.

Nucky takes inventory after being warned there's a skunk in his cellar. Chalky and Daughter lay low outside Wilmington with Chalky's mentor from years ago, Oscar Boneau. Gillian weighs selling her mansion and starting a new life with Roy Phillips.

Season Four Finale. Eli braces for the worst as Agent Knox sets in motion his plan to take down Nucky. Capone and Torrio reach an agreement in Cicero. Chalky looks to settle his scores. Richard Harrow steps forward to save Tommy, at Gillian's expense.