When a up-and-coming ballerina is murdered, Sherlock is called in to solve the case. Watson tries to find a homeless veteran after his friend reports him as kidnapped.
With Nucky's trial right around the corner, Jimmy tries to make amends, but is it too late? Margaret makes a life changing decision and Van Alden flees to the Midwest.
Jimmy despairs because of his wife's murder which the police suspect him of committing. With Jimmy off the scene, his partners try to take his share.
Nucky heads to New York to hire a new lawyer after firing the last. After failing to get the black workers back to work, Jimmy asks Chalky for his demands and instructs Mickey to pay his debt to Manny.moreless
Nucky travels to Belfast in the hope of trading Thompson machine guns for Irish whiskey. Margaret receives some devastating news.
Nucky makes some family changes on hearing about the death of his Father. Jimmy's current success causes him to rethink his relationship with Angela whom has made a feisty new friend at the beach.moreless
Jimmy takes drastic measures to prove himself. Margaret visits her family in New York, whilst Nucky deals with Lucy and Van Alden in Atlantic City.
Van Alden battles with his conscience. Nucky's court case hits a hurdle while he tries to set up a liquor delivery to Philadelphia.
Eli begins to question the choices he's made, Richard goes hunting in the forest with no intentions of returning, and Nucky invites a surprise guest speaker to a war veterans Memorial Day.
Nucky's attorney devises a plan that may help in Nucky's court case. Eli grows concerned over the Commodore's leadership abilities and Mickey's warehouse is next in Van Alden's sights.
Nucky asks the Attorney General for a favor when the Commodore stops alcohol reaching Atlantic City.
On realization that he might be losing control over Atlantic City, Nucky endeavors to discover which one of his men betrayed him. Rothstein puts Jimmy on hold in New York, with Lansky and Luciano still looking to do business. Dunn Purnsley gets more than he bargained for when he gets in Chalky's face in prisonmoreless
Insurrection rears its ugly head amongst Nucky's ranks. Chalky escapes death when he and some of his men are attacked by the Klu Klux Klan. Margaret continues to worry about Tommy's behavior and Van Alden takes his wife out on the town for their anniversarymoreless
Election day arrives and Nucky prepares for change. Torrio sets up a potentially hostile deal between two bitter rivals.
Jimmy speaks with his father after nine years. Nucky has heated conversations with both Eli and Margaret regarding the business and the murder of Margaret's husband. Van Alden takes matters to the extreme with Agent Sebso and Angela's plans to flee to Paris are scuppered.moreless
Van Alden's increasingly conflicted emotions start to interfere with his work. Nucky has words with Margaret in regards to her support. Also, Angela is taken aback when seeing Jimmy's violent side.
Margaret tries to help Madame Jeunet with her money troubles by speaking with Nucky. Jimmy is forced to return to Chicago to deal with the D'Alessio brothers and Nucky gets ready for war with a rival factionmoreless
Nucky gets troubling news while visiting the Republican National Convention in Chicago.
Jimmy becomes friends with a fellow veteran who lost half his face in the war. Luciano and Meyer Lansky make a deal with the D'Alessio brothers and Nucky deals with some unpleasant childhood memories.moreless
Nucky investigates a theft on the boadwalk, Jimmy gets on the right side of Johnny Torrio and Margaret stands her ground regarding Lucy.
Nucky's St. Patrick's Day celebrations are cut short when Van Alden raids the establishment.
Al and Jimmy negotiate with a supplier in Greektown. Nucky organizes a surprise party for a U.S. Senator, lobbying him to get more roads to Atlantic City. Chalky, with the aid of Elias, investigate Chalky's driver's lynching. Jimmy settles in with Al and his boss, Johnny Torrio.moreless
Jimmy finds himself in trouble when a dying witness fingers him for the murders in the woods. Chalky's deal with Nucky hits trouble when his driver is lynched. Margaret gets a job at a boutique.moreless
Nucky is paid a visit by Agent Van Alden who feels a crime is being pinned on a scapegoat and wants some answers, forcing Nucky to close ranks on all his operations. He visits his old mentor, Commodore Louis Kaestner regarding the womens right to vote and later meets with Margaret Shroeder, still recovering from the beating she received from her now deceased husband, who has asked for help with her children.moreless
On the eve of Prohibition, January, 1920. Nucky Thompson, Atlantic City's Treasurer, condemns alcohol at a Temperance League meeting for women, however, behind closed doors he is telling his ward bosses about the huge amounts of cash they could get selling bootleg liquor.