Boardwalk Empire - Season 4 - Eps 1: New York Sour
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. Gillian seeks custody of her grandson, Tommy, while trying to find a “good” man to keep the Artemis Club afloat. Eli’s college-age son, Willie, turns to Nucky for career advice. Al Capone enlists his brothers, Frank and Ralph, to help him expand his business in the Chicago suburb of Cicero. Richard Harrow returns to his violent ways.
About Boardwalk Empire

Title: Boardwalk Empire
First Air Date: 2010-09-19
Last Air Date: 2014-10-26
Status: Ended
Rating: 7.992/10 (from 1103 votes)
Language: EN
Seasons: 6
Total Episodes: 56
Network: HBO
Genres: Crime, Drama
Production Companies: Closest to the Hole Productions, Sikelia Productions, Leverage Entertainment, Cold Front Productions
Synopsis
Atlantic City at the dawn of Prohibition is a place where the rules don't apply. And the man who runs things -- legally and otherwise -- is the town's treasurer, Enoch "Nucky" Thompson, who is equal parts politician and gangster.
Cast

Steve Buscemi
Enoch "Nucky" Thompson

Kelly Macdonald
Margaret Schroeder / Margaret Thompson

Michael Shannon
Nelson Van Alden

Shea Whigham
Elias "Eli" Thompson

Stephen Graham
Al Capone

Vincent Piazza
Charles "Lucky" Luciano

Michael Kenneth Williams
Albert "Chalky" White

Paul Sparks
Mieczysław "Mickey" Doyle

Gretchen Mol
Gillian Darmody

Jeffrey Wright
Valentin Narcisse