Agent Knox's plan to take down Nucky begins.
Chalky and Maitland hide out at his old mentor's, Oscar Boneau. Gillian contemplates selling her business for a life with Roy.
Chalky botches the hit on Narcisse and ends up wounded himself. Van Alden saves Al Capone when the building is lit up with Tommy gunfire, and Nucky is forced into dealings with Narcisse.
Julia proposes to Richard much to his delight, prompting him to ask Nucky for work. Narcisse beats Maitland for her failure.
Agent Tolliver hears what happened with Willie at the school and uses it to blackmail Eli. Narcisse arranges with Maitland to kill Chalky.
Still grieving for his brother, Al, in a fit of rage kills a policeman. Rothstein and Margaret unexpectedly run in to each other, and Willie drops out of college, enraging his father.
Eli discovers Eddie's key whilst investigating his death, but can't access what it opens, and Nucky gets some nuckie with Sally.
Knox uses torture methods on Eddie, Al's brother is gunned down, and Nucky advises Willie to stick to his false alibi.
Nucky loses confidence in Rothstein as a partner. Willie plays a revenge prank on a fellow student that goes woefully wrong, and Federal agents continue to close in on Nucky's business.
While visiting Tampa, Nucky finds himself attracted to a local bar owner. Willie tries to pinch some alcohol from Mickey's warehouse, and Richard's sister comes to his aid.
Van Alden is ordered to keep an eye on the Capone's. Dr. Valentin Narcisse arrives in town with nothing but trouble with him. Eddie demands a promotion.
Nucky reaches out to Joe Masseria after the battle with Rosetti. Gillian takes action to gain custody of her grandson. Eli's oldest son asks Nucky for career advice.