Nucky is awash in memories from pier-boy days growing up in 1884 Atlantic City, when the young Nucky caught the eye of the Commodore. In 1931 Cuba, Nucky joins Sally Wheet and, with a U.S. Senator in tow, forges ties with Bacardi Rum in hopes of Prohibition’s repeal in the U.S. Working on Wall Street, Margaret finds herself in the hot seat when her boss, facing an internal investigation, decides his own future.
Nucky refuses to back Chalky in his conflict with Narcisse. Julia considers her options after Gillian makes her custody 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 a cash infusion.
Following his battle with Gyp Rosetti, Nucky makes a peace offering to Joe Masseria while working the odds with Arnold Rothstein. While Chalky is busy running the Onyx Club on the Boardwalk, the impulsive Dunn Purnsley clashes with a booking agent. Fresh-faced Federal Agent Warren Knox arrives in Atlantic City to learn the ropes from Agent Sawicki.
Season 3 begins on New Year’s Eve in 1922, but gangster Gyp Rosetti isn’t in a celebratory mood after hearing Nucky’s plans to alter his business model. Meanwhile, in Chicago, Irish mobster Dean O’Banion gets on Al Capone’s last nerve, and Van Alden hopes for a career boost.
To The Lost
Jimmy wants to make statement on Nucky’s trial.MargaretweighedEsther Randolph’s offer and decided to change her life… and Nucky’s.
Under God’s Power She Flourishes
Nucky and Fallon begin planning his defense strategy, aided by a discovery that dramatically ends Van Alden’s career. Blaming herself for Emily’s polio, Margaret contemplates purging her sins in court.
Nucky shows he still has a few tricks up his sleeve by finding another source for booze, so Jimmy and his partners look for a new moneymaker in Atlantic City. Meanwhile, striking workers create a dilemma for the powers-that-be at the height of tourist season
Battle of the Century
Arriving in Belfast, Nucky and Owen meet with IRA leaders with a barter proposition. Meanwhile, in Atlantic City, Jimmy and his partners broker a deal with George Remus for his “medicinal” alcohol before taking a break to see/hear the Dempsey fight.
Two Boats and a Lifeguard
Nucky turns to Arnold Rothstein for political advice in the aftermath of a personal loss, but Eli remains unsure of his brother’s motives. Meanwhile, Angela makes a new acquaintance on the beach and learns more about her husband’s business methods
Peg of Old
Margaret has a family reunion; Owen gets even with a rival; Van Alden recognizes the hierarchy of the law; Jimmy wonders how a decision will affect the future.
The Age of Reason
Nucky tries to set up a risky liquor delivery to Philadelphia. Later, Attorney General Daugherty sees a problem that might complicate Nucky’s case. Jimmy finds a new mentor in Leander Whitlock who is the Commodore’s lawyer.
Gimcrack and Bunkum
After a dispute with his enemies, Nucky brings in a surprise guest speaker at a Memorial Day dedication for war veterans. Running out of options, Eli questions his allegiances, but it ends up sending him deeper into the hole.
What Does the Bee Do?
During Mayor Bader’s birthday party, Nucky’s attorney comes up with a solution that might help Nucky in his election-rigging case.
A Dangerous Maid
The Commodore uses his contacts in the Coast Guard to stop alcohol from reaching Atlantic City. With his transportation hurting, Nucky reaches out to Washington’s new Attorney General, Harry Daugherty, to ask for a favor.
When realizing that he might be losing control over Atlantic City, Nucky tries to figure out which one of his men betrayed him. When agents search the Treasurer’s Office for evidence, Margaret tries to dig into her past to help Nucky in the present.
Nucky eyes a real-estate bonanza when it comes to access to Atlantic City, but has his hands full trying to play peacemaker after Chalky has a run-in with the KKK.