The life and times of gangster and treasurer, Enoch "Nucky" Thompson, in Atlantic City, as prohibition sweeps the nation. When a former ally tips off the police and sets them on his tail, Nucky runs into some trouble.
In February 1924, Nucky makes peace with Masseria and Rothstein, while a new prohibition agent arrives in Atlantic City. Violence/sex. (S4, ep 1)
Harlem gangster Valentin Narcisse arrives in Atlantic City. Meanwhile, an opportunity arises for Nucky in Florida. Strong language/sex/mature themes/flashing images. (S4, ep 2)
Nucky has reservations about investing in a Tampa land deal engineered by bootlegger Bill McCoy. Strong language/violence/mature themes/flashing images. (S4, ep 3)
Arnold Rothstein agrees to bankroll Nucky's investment, but first demands that they get the measure of each other. Strong language/violence/mature themes/flashing images. (S4, ep 4)
Nucky deals with the fallout from Willie's fiasco, Eddie Kessler is detained and the Capones recruit Van Alden. Strong language/violence/mature themes/flashing images. (S4, ep 5)
Nucky considers new partners before contacting Sally Wheet. Elsewhere, Knox looks to gain Eli's trust and Harrow returns. Strong language/sex/flashing images. (S4, ep 6)
Eli's son asks Nucky for a job, Capone sets out to avenge his brother's murder and Margaret has a surprise encounter. Violence/sex/mature themes/flashing images. (S4, ep 7)
Agent Knox hits a critical turning point in his investigation into Nucky, while Chalky declares war on Dr Narcisse. Violence/mature themes/flashing images. (S4, ep 8)
Chalky White asks Nucky for permission to take out Valentin Narcisse. In Chicago, the Capone brothers recruit Van Alden. Strong language/violence/sex. (S4, ep 9)
Things are heating up for Nucky as Dr Valentin Narcisse makes a major power play to push Chalky White out of town. Strong language/violence/flashing images. (S4, ep 10)
Chalky and Daughter Maitland go on the run from Narcisse, while Eli comes under pressure from Agent Knox to provide information. Contains strong language. (S4, ep 11)
The long-simmering tensions between Narcisse and Chalky, Gillian and Richard, and Nucky and Eli come to a head. Strong language/violence/flashing images. (S4, ep 12)