Nucky Thompson Seizes Control of Atlantic City (Revealed in Season One, Episode 12)
The vicious cycle of betrayal in the Boardwalk Empire universe began years before January 1920, when the pilot takes place. Sometime in the early 1910s, Nucky was merely the sheriff of Atlantic County, and his mentor, Commodore Louis Kaestner, was in charge. The two were caught rigging an election, but only the Commodore went to jail – with the understanding that he would resume his role as Atlantic City boss upon his release. Nucky, unwilling to give up the power and wealth his new position provided, went back on his word, leaving a bitter Commodore poised to stage a coup of his own in early 1921, at the start of the second season.