The Ivory Tower (Boardwalk Empire)

• Steve Buscemi as Enoch "Nucky" Thompson
• Michael Pitt as James "Jimmy" Darmody
• Kelly Macdonald as Margaret Schroeder/Thompson
• Michael Shannon as Nelson Van Alden
• Shea Whigham as Elias "Eli" Thompson
• Aleksa Palladino as Angela Darmody
• Michael Stuhlbarg as Arnold Rothstein
• Stephen Graham as Al Capone
• Vincent Piazza as Charles Luciano
• Paz de la Huerta as Lucy Danziger
• Anthony Laciura as Edward Anselm "Eddie" Kessler – Nucky's assistant and butler.
• Paul Sparks as Mieczyslaw "Mickey Doyle" Kuzik
• Dabney Coleman as Commodore Louis Kaestner – Nucky's mentor and predecessor in Atlantic City.

At Big Jim Colosimo's funeral in Chicago, Capone and Torrio are questioned by reporters about Colosimo's murder. Back in Atlantic City, Prohibition agent Nelson Van Alden questions Nucky about the robbery he is investigating, revealing his suspicions that Hans Schroeder was framed for them. At Nucky's direction, Eli visits Margaret in the hospital and delivers an envelope of cash, stressing Hans's reported involvement in criminal activities. Nucky confronts Mickey in prison, informing him that his operation is being taken over by African-American gangster Albert "Chalky" White. Jimmy buys expensive Christmas gifts for his family with part of his share of the robbery proceeds.

In New York, Lucky delivers Frankie Yale to be questioned by Rothstein about his role in Colosimo's murder. Jimmy visits his mother Gillian, a showgirl, and presents her with an expensive necklace, replacing one she had sold to support the family during his childhood. When Jimmy goes to work, Nucky confronts him about the robbery. After Jimmy admits his and Capone's involvement, Nucky fires him and demands an extra $3,000 share from the proceeds. Rothstein telephones Nucky and demands $100,000 to cover his losses from the robbery, pointing out that a member of his family was among the shooting victims. Nucky refuses the demand. Nelson Van Alden, an agent with the Bureau of Prohibition, visits Margaret at her home and tells her he believes her husband was not involved in the robbery, questioning her about her involvement with Nucky.

Nucky visits his political mentor, "Commodore" Louis Kaestner, who derides the idea of women's suffrage. After Van Alden writes home to his wife, he takes a hair ribbon he had taken from Margaret and smells it. Margaret visits Nucky and returns the money Eli gave her. They discuss Nucky's late wife, Margaret's financial situation, and Margaret's enthusiasm for reading, which appears to impress Nucky. Jimmy steals back the necklace from his mother and resells it in order to pay Nucky back. Nucky demonstrates the change in their relationship by immediately betting, and losing, the $3,000 in a roulette game. Elsewhere, a wounded survivor of the robbery turns up at the shooting scene.

The episode was written by series creator and executive producer Terence Winter and directed by executive producer Tim Van Patten. This is Van Patten's first directional episode of the series. He directs later episodes, Broadway Limited, Family Limitation and the season finale, A Return to Normalcy.

The story about Big Jim Colosimo's death is the one non-fictional story in The Ivory Tower. As seen in the pilot, Frankie Yale murders Jim on orders from Johnny Torrio. It was widely believed that Torrio ordered Colosimo's killing so that the gang could enter the lucrative bootlegging business.

• "The Ivory Tower" at HBO
• "The Ivory Tower" on IMDb
• "The Ivory Tower" at TV.com